DIPTI METAL INDUSTRIES
Ring Type Joint (RTJ) Gaskets - Leading Manufacturer, Exporter, Stockist & Supplier for Extreme Conditions
DIPTI METAL INDUSTRIES – Your Premier Global Partner for Precision-Engineered, High-Integrity Metallic Sealing Solutions in the Most Demanding Environments. Established in 2009, we are an ISO 9001:2015 certified firm based in Mumbai, India, recognized as the leading Ring Type Joint (RTJ) Gaskets manufacturer in Mumbai and a top API 6A/17D certified exporter in India. We specialize in robust, metallic RTJ Gaskets, specifically designed to provide exceptionally effective and reliable sealing in environments characterized by extremely high pressures (up to 20,000 psi), severe temperatures (from cryogenic to 800°C+), and highly corrosive chemical media. Our precision-engineered RTJ gaskets are absolutely crucial for ensuring leak-free operation, enhanced safety, and long-term integrity in critical piping systems and process equipment, particularly within the petroleum industry.
Our RTJ Gaskets are expertly machined from various high-quality metals to precise dimensions and surface finishes, ensuring optimal interaction with specially grooved flanges. The sealing action is achieved by the initial line contact between the gasket and the flange groove, followed by the "wedging" effect and plastic deformation of the softer gasket material into the harder flange material when bolt loads are applied. This creates an incredibly strong, high-integrity, and pressure-energized seal. Dipti Metal offers a comprehensive portfolio that includes R, RX, and BX type RTJ gaskets, available in an extensive range of metallic grades, to meet the exacting and dynamic demands of critical sectors such as oil & gas exploration and production (upstream, midstream, downstream), petrochemical refining, power generation, offshore drilling platforms, and heavy chemical processing industries. We are steadfastly committed to supplying reliable, durable, and certified RTJ sealing solutions that not only ensure optimal operational efficiency but also significantly uphold the integrity and safety of sensitive industrial infrastructure worldwide. We maintain a large stock to serve as the biggest multi-grade RTJ gaskets stockist, ensuring immediate dispatch for urgent industrial needs globally. Every gasket is supplied with full material traceability via EN 10204 3.1 MTCs, validating our position as a top material supplier for critical industrial service.
Overview & Importance: Why Choose a Leading Ring Type Joint (RTJ) Gaskets Manufacturer
Ring Type Joint (RTJ) Gaskets are robust, metallic sealing components specifically designed to provide exceptionally effective and reliable solutions in environments characterized by extremely high pressures, severe temperatures, and highly corrosive chemical media. Widely acclaimed for their distinctive metal-to-metal sealing mechanism, superior mechanical strength, and inherent resistance to blow-out, our precision-engineered RTJ gaskets are absolutely crucial for ensuring leak-free operation, enhanced safety, and long-term integrity in critical piping systems and process equipment, particularly within industries like petroleum where high-pressure applications necessitate a high-integrity seal.
The sealing action of RTJ gaskets is achieved by the initial line contact between the gasket and the specially grooved flange, followed by the "wedging" effect and plastic deformation of the softer gasket material into the harder flange material when bolt loads are applied. This creates an incredibly strong, high-integrity, and pressure-energized seal. As a major global RTJ Gaskets manufacturer and Metallic Gasket supplier in Mumbai, DIPTI METAL INDUSTRIES provides a comprehensive portfolio that includes R, RX, and BX type RTJ gaskets, available in an extensive range of metallic grades. We meet the exacting and dynamic demands of critical sectors such as oil & gas exploration and production (upstream, midstream, downstream), petrochemical refining, power generation, offshore drilling platforms, and heavy chemical processing industries. Our unwavering commitment to stringent quality control ensures that every RTJ gasket we supply meets precise dimensional and material specifications, providing robust and durable sealing solutions for demanding industrial backflow prevention applications worldwide. Explore our full range of industrial gaskets.
Key Features & Unmatched Benefits of Dipti Metal's Ring Type Joint (RTJ) Gaskets
- Exceptional High-Pressure Capability: RTJ gaskets are specifically designed for severe service conditions, providing robust and reliable sealing in applications with extremely high internal pressures, far exceeding the capabilities of soft gaskets (up to 20,000 psi).
- High-Temperature Stability: Constructed from solid metallic materials, RTJ gaskets maintain their structural integrity and sealing performance across a very wide range of high operating temperatures (from cryogenic to 800°C+), where non-metallic gaskets would degrade or fail.
- Superior Blow-out Resistance: The robust metal construction, combined with the precise confinement within specially machined flange grooves, provides inherent and superior blow-out resistance, making them incredibly safe and reliable, particularly in volatile or high-energy systems.
- Metal-to-Metal Seal Integrity: The sealing mechanism relies on the controlled plastic deformation of the gasket material into the flange grooves, creating a strong, high-integrity metal-to-metal seal that is highly resistant to leakage.
- Pressure Energized Sealing (RX & BX Types): For RX and especially BX gaskets, the internal system pressure actually enhances the sealing force, pushing the gasket further into the flange grooves, thereby augmenting and improving sealing effectiveness under increasing pressure.
- Broad Chemical Compatibility (Material Dependent): Available in a vast array of metallic grades, allowing for precise selection to ensure universal chemical resistance to aggressive fluids, concentrated acids, bases, and various hydrocarbons, even in highly corrosive environments.
- Certified for Critical Applications: Our RTJ gaskets are manufactured to stringent international standards, including API 6A, API 17D, and ASME B16.20, making them suitable for certified pressure equipment and piping systems requiring the highest levels of safety and performance.
- Full Traceability & Quality Assurance: Each gasket is produced from fully traceable materials with mill certification to final supply, adhering to strict quality assurance procedures that meet and exceed those demanded by the highest API 6A and 17D approvals.
- NACE Compliance: Available to NACE MR0175/ISO 15156 specifications upon request, ensuring suitability for sour service applications in oil and gas.
- Corrosion Protection: Soft iron and low carbon steel RTJs are typically protected with electroplated zinc coating (max 8μm) to minimize corrosion.
Ring Type Joint (RTJ) Gaskets: Comprehensive Types, Materials & Grades
DIPTI METAL INDUSTRIES offers a highly specialized and comprehensive range of Ring Type Joint (RTJ) Gaskets, meticulously machined and available in various types, precise metal grades, and configurations to perfectly match your specific operating conditions, demanding fluid compatibility, and exact flange sealing requirements. We provide custom-manufactured RTJ gaskets alongside all international standard dimensions and specifications, ensuring optimal fit, maximum performance, and full compliance for every critical application worldwide. Our RTJ gaskets are typically manufactured and certified to industry standards such as API 6A, API 17D, and ASME B16.20. For other metallic sealing solutions, visit our Solid Metal Gaskets page.
1. Types of Ring Type Joint Gaskets:
These are the foundational RTJ gaskets, manufactured in accordance with ASME B16.20 or API 6A. They create a seal by the compressive force causing the gasket material to plastically deform into and fill the micro-fine imperfections of the flange groove.
- Shapes:
- Oval Cross-Section: The original R-type design.
- Octagonal Cross-Section: The modern preferred R-type design, offering more efficient sealing. Both oval and octagonal types are interchangeable on modern octagonal-type grooved flanges.
- Applications: Suitable for API 6A flanges up to 5,000 psi and ASME B16.5 / B16.47 flanges up to Pressure Class 2500. Primarily used in the oil field on drilling and completion equipment, valves, and pipework assemblies.
- Recommendation: As with all solid metal Ring Type Joints, it is recommended to replace the ring when the flanged connection is broken.
An adaptation of the standard Style R, the RX gasket is a pressure-activated gasket with a slightly different cross-section. It features a larger contact area and is designed to take advantage of the internal system pressure, which acts upon its unique profile, enhancing the sealing force as pressure increases. It incorporates a pressure passage hole to prevent pressure lock.
- Applications: Designed to fit the same groove design as a standard Style R, making the joints interchangeable (though consideration should be given to the difference in finished make-up distance). Specifically for API 6A flanges from 2,000 psi to 10,000 psi and ASME B16.5 / B16.47 flanges up to Pressure Class 5000. Offers improved sealing at higher pressures.
The BX gasket is a fully pressure-energized, all-metal seal designed for extremely high pressures, manufactured in accordance with ASME B16.20, API 6A, and API 17D. It relies on a metal-to-metal seal where the system pressure acts on the exposed face of the gasket, pushing it against the flange groove, thereby augmenting the sealing force. When correctly fitted, it allows virtual face-to-face contact of the flange faces, fully confining the gasket. All BX gaskets incorporate a pressure balance hole to ensure equalization of pressure which may be generated in the grooves.
- Applications: Exclusively designed for API 6A Type 6BX flanges, typically used for pressure ratings from 10,000 psi up to 20,000 psi. These are critical seals for wellhead and blowout preventer applications.
2. Metallic Materials & Grades for RTJ Gaskets:
The selection of the gasket material is critical and must be softer than the flange material to allow for proper deformation without damaging the flange. Our RTJ gaskets are available in a vast array of high-quality metals, each chosen for its specific mechanical, thermal, and corrosion resistance properties. Materials are supplied to NACE specifications upon request.
| Material | UNS Number | Maximum Hardness (BHN) | Maximum Hardness (RB) | Identification (API, ASME, Dipti Metal) |
|---|---|---|---|---|
| Soft Iron | - | 90 | 56 | D (API) |
| Low Carbon Steel | - | 120 | 68 | S (API) |
| 4–6% Chrome 1/2% Moly (F5) | K42544 | 130 | 75 | F5 (API) |
| St. St. AISI 304 | S30400 | 160 | 83 | S304 (API) |
| St. St. AISI 316 | S31600 | 160 | 83 | S316 (API) |
| St. St. AISI 347 | S34700 | 160 | 83 | S347 (API) |
| St. St. AISI 410 | S41000 | 170 | 86 | S410 (API) |
| Alloy 600 | N06600 | 200 | 92 | UNS N06600 |
| Alloy 625 | N06625 | 200 | 92 | UNS N06625 |
| Alloy 800 | N08800 | 200 | 92 | UNS N08800 |
| Alloy 825 | N08825 | 200 | 92 | UNS N08825 |
| Alloy C276 | N10276 | 200 | 92 | UNS N10276 |
| SMO 254 | S31254 | 180 | 89 | UNS S31254 |
| Duplex S31803 | S31803 | 250 | - | UNS S31803 |
| Super Duplex S32760 | S32760 | 200 | 92 | UNS S32760 |
| Monel® 400 (M400) | N04400 | 200 | 92 | UNS N04400 |
| Titanium Gr.2 | R50400 | 215 | 94 | UNS R50400 |
*(Note (a): The maximum hardness values applied to Soft Iron may be required for Low Carbon Steel. Note (b): Material identification of RTJs manufactured in accordance with API-6A will include '-4' immediately after the material identification. E.g., S316-4. Note (c): Hardness limits specified by A = API, B = ASME, Dipti Metal C = Dipti Metal's internal standard for exotic alloys. For more highly specialized applications, our Technical Department is available to advise on other exotic materials like Inconel® and Hastelloy®.)*
All our RTJ gaskets undergo rigorous quality checks, including material chemical analysis, hardness testing (ensuring material is softer than the mating flange), and precise dimensional verification, ensuring full compliance with industry standards.
Ring Type Joint (RTJ) Gasket Dimensions & Tolerances
The precise dimensions of RTJ gaskets are crucial for a proper seal and are strictly defined by international standards. The sealing faces of Style R and RX RTJs shall not be greater than 1.6 μm Ra / 63 μin RMS. For Style BX, the sealing faces shall not be greater than 0.8 μm Ra / 32 μin RMS. The following tables provide comprehensive dimensional data for R Type Octagonal, RX, and BX gaskets according to ASME B16.20 and API 6A / API 17D standards. Dimensions are in millimeters.
Table 1: Dimensional Data - Style R Gaskets (ASME B16.20 and API 6A)
| RING NUMBER | NOMINAL PIPE SIZES (ASME B16.5 & B16.47 Series A Pressure Class Ratings) | NOMINAL PIPE SIZES (API 6A psi) | PITCH DIA. OF RING (P) ±0.18 | WIDTH OF RING (A) ±0.20 | HEIGHT OF RING ±0.50 | APPROX. DIST. BETWEEN MADE UP FLANGES (mm) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 150 | 300/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | OVAL (B) | OCTAG (H) | ||||
| R 11 | 1/2 | - | - | - | - | - | - | - | 34.14 | 6.35 | 11.2 | 9.7 | - |
| R 12 | - | - | 1/2 | 1/2 | - | - | - | - | 39.70 | 7.95 | 14.2 | 12.7 | - |
| R 13 | - | 3/4 | - | - | 1/2 | - | - | - | 42.88 | 7.95 | 14.2 | 12.7 | - |
| R 14 | - | - | 3/4 | 3/4 | - | - | - | - | 44.45 | 7.95 | 14.2 | 12.7 | - |
| R 15 | 1 | - | - | - | - | - | - | - | 47.63 | 7.95 | 14.2 | 12.7 | - |
| R 16 | - | 1 | 1 | 1 | 3/4 | - | - | - | 50.80 | 7.95 | 14.2 | 12.7 | - |
| R 17 | 1 1/4 | - | - | - | - | 1 | 1 | 1 | 57.15 | 7.95 | 14.2 | 12.7 | - |
| R 18 | - | 1 1/4 | 1 1/4 | 1 1/4 | 1 1/4 | 1 1/4 | 1 1/4 | 1 1/4 | 60.33 | 7.95 | 14.2 | 12.7 | - |
| R 19 | 1 1/2 | - | - | - | - | - | - | - | 65.10 | 7.95 | 14.2 | 12.7 | - |
| R 20* | - | 1 1/2 | 1 1/2 | 1 1/2 | - | 1 1/2 | 1 1/2 | 1 1/2 | 68.28 | 7.95 | 14.3 | 12.7 | 4.1 |
| R 21 | - | - | - | - | 1 1/4 | - | - | - | 72.24 | 11.13 | 17.5 | 16.0 | - |
| R 22 | 2 | - | - | - | - | - | - | - | 82.55 | 7.95 | 14.2 | 12.7 | - |
| R 23* | - | 2 | - | - | 1 1/2 | - | - | - | 82.55 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 24* | - | - | 2 | 2 | - | - | 2 | 2 | 95.25 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 25 | 2 1/2 | - | - | - | - | - | - | - | 101.60 | 7.95 | 14.2 | 12.7 | - |
| R 26* | - | 2 1/2 | - | - | 2 | 2 1/2 | - | - | 101.60 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 27* | - | - | 2 1/2 | - | - | - | 2 1/2 | 2 1/2 | 107.95 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 28 | - | - | - | - | 2 1/2 | - | - | - | 111.13 | 12.70 | 19.1 | 17.5 | - |
| R 29 | 3 | - | - | - | - | - | - | - | 114.30 | 7.95 | 14.2 | 12.7 | - |
| R 30 (a) | - | 3 | - | - | - | - | - | - | 117.48 | 11.13 | 17.5 | 16.0 | - |
| R 31* | - | 3 | 3 | - | - | 3 | 3 | - | 123.83 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 32 | - | - | - | - | 3 | - | - | - | 127.00 | 12.70 | 19.1 | 17.5 | - |
| R 33 | 3 1/2 | - | - | - | - | - | - | - | 131.78 | 7.95 | 14.2 | 12.7 | - |
| R 34 | - | 3 1/2 | - | - | - | - | - | - | 131.78 | 11.13 | 17.5 | 16.0 | - |
| R 35* | - | - | - | 3 | - | - | - | 3 | 136.53 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 36 | 4 | - | - | - | - | - | - | - | 149.23 | 7.95 | 14.2 | 12.7 | - |
| R 37* | - | 4 | 4 | - | - | 4 | 4 | 3 1/2 | 149.23 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 38 | - | - | - | - | 4 | - | - | - | 157.18 | 15.88 | 22.4 | 20.6 | - |
| R 39* | - | - | - | 4 | - | - | - | 4 | 161.93 | 11.13 | 17.5 | 16.0 | 4.8 |
| R 40 | 5 | - | - | - | - | - | - | - | 171.45 | 7.95 | 14.2 | 12.7 | - |
| R 41* | - | 5 | 5 | - | - | 5 | 5 | - | 180.98 | 11.13 | 17.5 | 15.9 | - |
| R 42 | - | - | - | - | 5 | - | - | - | 190.50 | 19.05 | 25.4 | 23.9 | - |
| R 43 | 6 | - | - | - | - | - | - | - | 193.68 | 7.95 | 14.2 | 12.7 | - |
| R 44* | - | - | - | 5 | - | - | - | 5 | 193.68 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 45* | - | 6 | 6 | - | - | 6 | 6 | - | 211.15 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 46* | - | - | - | 6 | - | - | - | 6 | 211.15 | 12.70 | 19.1 | 17.5 | 4.8 |
| R 47* | - | - | - | - | 6 | - | - | 6 | 228.60 | 19.05 | 25.4 | 23.9 | 4.1 |
| R 48 | 8 | - | - | - | - | - | - | - | 247.65 | 7.95 | 14.2 | 12.7 | - |
| R 49* | - | 8 | 8 | - | - | 8 | 8 | - | 269.88 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 50* | - | - | - | 8 | - | - | - | 8 | 269.88 | 15.88 | 22.4 | 20.6 | 4.1 |
| R 51 | - | - | - | - | 8 | - | - | - | 279.40 | 22.23 | 28.7 | 26.9 | - |
| R 52 | 10 | - | - | - | - | - | - | - | 304.80 | 7.95 | 14.2 | 12.7 | - |
| R 53* | - | 10 | 10 | - | - | 10 | 10 | - | 323.85 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 54* | - | - | - | 10 | - | - | - | 10 | 323.85 | 15.88 | 22.4 | 20.6 | 4.1 |
| R 55 | - | - | - | - | 10 | - | - | - | 342.90 | 28.58 | 36.6 | 35.1 | - |
| R 56 | 12 | - | - | - | - | - | - | - | 381.00 | 7.95 | 14.2 | 12.7 | - |
| R 57* | - | 12 | 12 | - | - | 12 | 12 | - | 381.00 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 58 | - | - | - | 12 | - | - | - | - | 381.00 | 22.23 | 28.7 | 26.9 | - |
| R 59 | 14 | - | - | - | - | - | - | - | 381.88 | 7.95 | 14.2 | 12.7 | - |
| R 60 | - | - | - | - | 12 | - | - | - | 406.40 | 31.75 | 39.6 | 38.1 | - |
| R 61 | - | 14 | - | - | - | 14 | 14 | - | 419.10 | 11.13 | 17.5 | 16.0 | - |
| R 62 | - | - | 14 | - | - | - | - | - | 419.20 | 15.88 | 22.4 | 20.6 | - |
| R 63* | - | - | - | 14 | - | - | - | - | 419.00 | 25.40 | 33.3 | 31.8 | 5.6 |
| R 64 | 16 | - | - | - | - | - | - | - | 454.03 | 7.95 | 14.2 | 12.7 | - |
| R 65* | - | 16 | - | - | - | 16 | - | - | 469.90 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 66* | - | - | 16 | - | - | - | 16 | - | 469.90 | 15.88 | 22.4 | 20.6 | 4.1 |
| R 67 | - | - | - | 16 | - | - | - | - | 517.53 | 28.58 | 36.6 | 35.1 | - |
| R 68 | 18 | - | - | - | - | - | - | - | 533.40 | 7.95 | 14.2 | 12.7 | - |
| R 69* | - | 18 | - | - | - | 18 | - | - | 533.40 | 11.13 | 17.5 | 15.9 | 4.8 |
| R 70* | - | - | 18 | - | - | - | 18 | - | 533.40 | 19.05 | 25.4 | 23.9 | 4.8 |
| R 71 | - | - | - | 18 | - | - | - | - | 533.40 | 28.58 | 36.6 | 35.1 | - |
| R 72 | 20 | - | - | - | - | - | - | - | 558.80 | 7.95 | 14.2 | 12.7 | - |
| R 73* | - | 20 | - | - | - | 20 | - | - | 584.20 | 12.70 | 19.1 | 17.5 | 3.3 |
| R 74* | - | - | 20 | - | - | - | 20 | - | 584.20 | 19.05 | 25.4 | 23.9 | 4.8 |
| R 75 | - | - | - | 20 | - | - | - | - | 584.20 | 31.75 | 39.6 | 38.1 | - |
| R 76 | 24 | - | - | - | - | - | - | - | 673.10 | 7.95 | 14.2 | 12.7 | - |
| R 77 | - | 24 | - | - | - | - | - | - | 692.15 | 15.88 | 22.4 | 20.6 | - |
| R 78 | - | - | 24 | - | - | - | - | - | 692.15 | 25.40 | 33.3 | 31.8 | - |
| R 79 | - | - | - | 24 | - | - | - | - | 692.15 | 34.93 | 44.5 | 41.4 | - |
| R 80 | 22 | - | - | - | - | - | - | - | 615.95 | 7.95 | - | 12.7 | - |
| R 81 | - | 22 | - | - | - | - | - | - | 635.00 | 14.30 | - | 19.1 | - |
| R 82* | - | - | - | - | - | - | - | - | 57.15 | 11.13 | - | 15.9 | 4.8 |
| R 84* | - | - | - | - | - | - | - | - | 63.50 | 11.13 | - | 15.9 | 4.8 |
| R 85* | - | - | - | - | - | - | - | - | 79.38 | 12.70 | - | 17.5 | 3.3 |
| R 86* | - | - | - | - | - | - | - | - | 90.50 | 15.88 | - | 20.6 | 4.1 |
| R 87* | - | - | - | - | - | - | - | - | 100.03 | 15.88 | - | 20.6 | 4.1 |
| R 88* | - | - | - | - | - | - | - | - | 123.83 | 19.05 | - | 23.9 | 4.8 |
| R 89* | - | - | - | - | - | - | - | - | 114.30 | 19.05 | - | 23.9 | 4.8 |
| R 90* | - | - | - | - | - | - | - | - | 155.58 | 22.23 | - | 26.9 | 4.8 |
| R 91* | - | - | - | - | - | - | - | - | 260.35 | 31.75 | - | 38.1 | 4.1 |
| R 92 | - | - | - | - | - | - | - | - | 228.60 | 11.13 | 17.5 | 16.0 | - |
| R 93 | - | 26 | - | - | - | - | - | - | 749.30 | 19.05 | - | 23.9 | - |
| R 94 | - | 28 | - | - | - | - | - | - | 800.10 | 19.05 | - | 23.9 | - |
| R 95 | - | 30 | - | - | - | - | - | - | 857.25 | 19.50 | - | 23.9 | - |
| R 96 | - | 32 | - | - | - | - | - | - | 914.40 | 22.23 | - | 26.9 | - |
| R 97 | - | 34 | - | - | - | - | - | - | 965.20 | 22.23 | - | 26.9 | - |
| R 98 | - | 36 | - | - | - | - | - | - | 1022.35 | - | 22.23 | - | - |
| R 99* | - | - | - | - | - | 8? | 8? | - | 234.95 | 11.13 | - | 15.9 | 4.8 |
| R 100 | - | - | 26 | - | - | - | - | - | 749.30 | 28.58 | - | 35.1 | - |
| R 101 | - | - | 28 | - | - | - | - | - | 800.10 | 31.75 | - | 38.1 | - |
| R 102 | - | - | 30 | - | - | - | - | - | 857.25 | 31.75 | - | 38.1 | - |
| R 103 | - | - | 32 | - | - | - | - | - | 914.40 | 31.75 | - | 38.1 | - |
| R 104 | - | - | 34 | - | - | - | - | - | 965.20 | 34.93 | - | 38.1 | - |
| R 105 | - | - | 36 | - | - | - | - | - | 1022.35 | - | 34.93 | - | - |
NOTES: *Denotes ring number specified in API 6A. (a) R30 Ring Type Joint used for lapped joint only. Dimensions in mm. Figures stated are for information only. Please refer to the current version of the original standards for dimensional information. Tolerances: A = width of ring ±0.20. B, H = height of ring, +1.3/-0.5. Variation in height throughout the entire circumference of any given ring shall not exceed 0.5 within these tolerances. P = average pitch diameter of ring ±0.18. R1 = radius in ring ±0.5. 23 deg = angle ±0 deg 30 min.
Table 2: Dimensional Data - Style RX Gaskets (ASME B16.20 and API 6A)
| RING NUMBER | NOMINAL PIPE SIZE (inches) PRESSURE CLASS RATINGS - API 6A (psi) | PITCH DIA. OF RING (P) | OUTSIDE DIAMETER (OD) | WIDTH OF RING (A) | WIDTH OF FLAT (C) | HEIGHT OF OUTSIDE BEVEL (D) | HEIGHT OF RING (H) | HOLE SIZE (E) (note 1 & 2) | APPROX DIST. BETWEEN MADE UP FLANGES (mm) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 3000 | 5000 | |||||||||
| RX 20 | 1 1/2 | 1 1/2 | 1 1/2 | 68.26 | 76.20 | 8.74 | 4.62 | 3.18 | 19.05 | - | 9.7 |
| RX 23 | 2 | - | - | 82.55 | 93.27 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.5 |
| RX 24 | - | 2 | 2 | 95.25 | 105.97 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.5 |
| RX 25 | - | - | 3 1/8 | 101.60 | 109.55 | 8.74 | 4.62 | 3.18 | 19.05 | - | - |
| RX 26 | 2 1/2 | - | - | 101.60 | 111.91 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 27 | - | 2 1/2 | 2 1/2 | 107.95 | 118.26 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 31 | 3 | 3 | - | 123.83 | 134.54 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 35 | - | - | 3 | 136.53 | 147.24 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 37 | 4 | 4 | - | 149.23 | 159.94 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 39 | - | - | 4 | 161.93 | 172.64 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 41 | 5 | 5 | - | 180.98 | 191.69 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 44 | - | - | 5 | 193.68 | 204.39 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 45 | 6 | 6 | - | 211.15 | 221.84 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 46 | - | - | 6 | 211.15 | 222.25 | 13.49 | 6.68 | 4.78 | 28.58 | - | 11.9 |
| RX 47 | - | - | 8 | 228.60 | 245.26 | 19.84 | 10.34 | 6.88 | 41.28 | - | 18.3 |
| RX 49 | 8 | 8 | - | 269.88 | 280.59 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 50 | - | - | 8 | 269.88 | 283.36 | 16.66 | 8.51 | 5.28 | 31.75 | - | 11.93 |
| RX 53 | 10 | 10 | - | 323.85 | 334.57 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 54 | - | - | 10 | 323.85 | 337.34 | 16.66 | 8.51 | 5.28 | 31.75 | - | 11.93 |
| RX 57 | 12 | 12 | - | 381.00 | 391.72 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 63 | - | - | 14 | 419.10 | 441.73 | 27.00 | 14.78 | 8.46 | 50.80 | - | 21.3 |
| RX 65 | 16 | - | - | 469.90 | 480.62 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 66 | - | 16 | - | 469.90 | 483.39 | 16.66 | 8.51 | 5.28 | 31.75 | - | 11.9 |
| RX 69 | 18 | - | - | 533.40 | 544.12 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 70 | - | 18 | - | 533.40 | 550.06 | 19.84 | 10.34 | 6.88 | 41.28 | - | 18.3 |
| RX 73 | 20 | - | - | 584.20 | 596.11 | 13.49 | 6.68 | 5.28 | 31.75 | - | 15.0 |
| RX 74 | - | 20 | - | 584.20 | 600.86 | 19.84 | 10.34 | 6.88 | 41.28 | - | 18.3 |
| RX 82 (1) | - | - | - | 57.15 | 67.87 | 11.91 | 6.45 | 4.24 | 25.40 | 1.5 | 11.9 |
| RX 84 (1) | - | - | - | 63.50 | 74.22 | 11.91 | 6.45 | 4.24 | 25.40 | 1.5 | 11.9 |
| RX 85 (1) | - | - | - | 79.38 | 90.09 | 13.49 | 6.68 | 4.24 | 25.40 | 1.5 | 9.7 |
| RX 86 (1) | - | - | - | 90.50 | 103.58 | 15.09 | 8.51 | 4.78 | 28.58 | 2.3 (2.4) | 9.7 |
| RX 87 (1) | - | - | - | 100.03 | 113.11 | 15.09 | 8.51 | 4.78 | 28.58 | 2.3 (2.4) | 9.7 |
| RX 88 (1) | - | - | - | 123.83 | 139.29 | 17.48 | 10.34 | 5.28 | 31.75 | 3.0 | 9.7 |
| RX 89 (1) | - | - | - | 114.30 | 129.77 | 18.26 | 10.34 | 5.28 | 31.75 | 3.0 | 9.7 |
| RX 90 (1) | - | - | - | 155.58 | 74.63 | 19.84 | 12.17 | 7.42 | 44.45 | 3.0 | 18.3 |
| RX 91 (1) | - | - | - | 260.35 | 286.94 | 30.18 | 19.81 | 7.54 | 45.24 | 3.0 | 19.1 |
| RX 99 | - | - | - | 234.95 | 245.67 | 11.91 | 6.45 | 4.24 | 25.40 | - | 11.9 |
| RX 201 | - | - | 1 3/8 | 46.05 | 51.46 | 5.74 | 3.20 | 1.45 (3) | 11.30 | - | - |
| RX 205 | - | - | 1 13/16 | 57.15 | 62.31 | 5.56 | 3.05 | 1.83 (3) | 11.10 | - | - |
| RX 210 | - | - | 2 9/16 | 88.90 | 97.64 | 9.53 | 5.41 | 3.18 (3) | 19.05 | - | - |
| RX 215 | - | - | 4 1/16 | 130.18 | 140.89 | 11.91 | 5.33 | 4.24 (3) | 25.40 | - | - |
General Notes for Style RX: Dimensions in mm. Figures stated are for information only. Please refer to the current version of the original standards for dimensional information. Tolerances: OD = outside diameter of ring, +0.51, -0.00. A = width of ring, +0.20, -0.00 - Variation in width throughout the entire circumference of any ring shall not exceed 0.10 within these tolerances. C = width of flat, +0.15, -0.00. D = height of outside bevel, +0.00, -0.76. H = height of ring, +0.20, -0.00 - Variation in height throughout the entire circumference of any ring shall not exceed 0.10 within these tolerances. R1 = radius of ring, ±0.5. 23 deg = angle, ±0 deg 30 min. E = hole size. ±0.5. NOTE 1: Rings RX-82 through RX-91 only require one pressure passage hole as illustrated. The centreline of the hole shall be located at the midpoint of dimension C. Hole diameter shall be as follows: 1.5mm ±0.5 for rings RX82 through RX85; 2.3mm ±0.5 (2.4mm ±0.5 for API 6A) for rings RX86 and RX87; 3.0mm ±0.5 for rings RX88 through RX91. NOTE 2: Tolerance on these dimensions is +0.00, -0.38.
Table 3: Dimensional Data - Style BX Gaskets (ASME B16.20, API 6A and API 17D)
| RING NUMBER | PRESSURE CLASS RATINGS - API 6BX FLANGES (psi) | NOMINAL PIPE SIZES (inches) | OUTSIDE DIAMETER (OD) | HEIGHT OF RING (H) | WIDTH OF RING (A) | OUTSIDE DIAMETER OF FLAT (ODT) | WIDTH OF FLAT (C) | HOLE SIZE (D) (note 1 & 2) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 3000 | 5000 | 10000 | 15000 | 20000 | ||||||||
| BX 150 | 43 | - | - | - | 1 11/16 | 1 11/16 | - | 72.19 | 9.30 | 9.30 | 70.87 | 7.98 | 1.5 (1.6) |
| BX 151 | 46 | - | - | - | 1 13/16 | 1 13/16 | 1 13/16 | 76.40 | 9.63 | 9.63 | 75.03 | 8.26 | 1.5 (1.6) |
| BX 152 | 52 | - | - | - | 2 1/16 | 2 1/16 | 2 1/16 | 84.68 | 10.24 | 10.24 | 83.24 | 8.79 | 1.5 (1.6) |
| BX 153 | 65 | - | - | - | 2 9/16 | 2 9/16 | 2 9/16 | 100.94 | 11.38 | 11.38 | 99.31 | 9.78 | 1.5 (1.6) |
| BX 154 | 78 | - | - | - | 3 1/16 | 3 1/16 | 3 1/16 | 116.84 | 12.40 | 12.40 | 115.09 | 10.64 | 1.5 (1.6) |
| BX 155 | 103 | - | - | - | 4 1/16 | 4 1/16 | 4 1/16 | 147.96 | 14.22 | 14.22 | 145.95 | 12.22 | 1.5 (1.6) |
| BX 156 | 179 | - | - | - | 7 1/16 | 7 1/16 | 7 1/16 | 237.92 | 18.62 | 18.62 | 235.28 | 15.98 | 3.0 (3.2) |
| BX 157 | 228 (229) | - | - | - | 9 | 9 | 9 | 294.46 | 20.98 | 20.98 | 291.49 | 18.01 | 3.0 (3.2) |
| BX 158 | 279 | - | - | - | 11 | 11 | 11 | 352.04 | 23.14 | 23.14 | 348.77 | 19.86 | 3.0 (3.2) |
| BX 159 | 346 | - | - | - | 13 5/8 | 13 5/8 | 13 5/8 | 426.72 | 25.70 | 25.70 | 423.09 | 22.07 | 3.0 (3.2) |
| BX 160 | 346 | - | - | 13 5/8 | - | - | - | 402.59 | 23.83 | 13.74 | 399.21 | 10.36 | 3.0 (3.2) |
| BX 161 | 425 (422) | - | - | 16 3/4 | - | - | - | 491.41 | 28.07 | 16.21 | 487.45 | 12.24 | 3.0 (3.2) |
| BX 162 | 425 (422) | - | - | 16 3/4 | 16 3/4 | 16 3/4 | - | 475.49 | 14.22 | 14.22 | 473.48 | 12.22 | 1.5 (1.6) |
| BX 163 | 476 | - | - | 18 3/4 | - | - | - | 556.16 | 30.10 | 17.37 | 551.89 | 13.11 | 3.0 (3.2) |
| BX 164 | 476 | - | - | - | 18 3/4 | 18 3/4 | - | 570.56 | 30.10 | 24.59 | 566.29 | 20.32 | 3.0 (3.2) |
| BX 165 | 540 | - | - | 21 1/4 | - | - | - | 624.71 | 32.03 | 18.49 | 620.19 | 13.97 | 3.0 (3.2) |
| BX 166 | 540 | - | - | - | 21 1/4 | - | - | 640.03 | 32.03 | 26.14 | 635.51 | 21.62 | 3.0 (3.2) |
| BX 167 | 679 (680) | 26 3/4 | - | - | - | - | - | 759.36 | 35.86 (3) | 13.11 | 754.28 | 8.03 | 1.5 (1.6) |
| BX 168 | 679 (680) | - | 26 3/4 | - | - | - | - | 765.25 | 35.86 (3) | 16.05 | 760.17 | 10.97 | 1.5 (1.6) |
| BX 169 | 130 | - | - | - | 5 1/8 | - | - | 173.51 | 15.85 | 12.93 | 171.27 | 10.69 | 1.5 (1.6) |
| BX 170 | 228 (168) | - | - | - | 6 5/8 | 6 5/8 | - | 218.03 | 14.22 | 14.22 | 216.03 | 12.22 | 1.5 (1.6) |
| BX 171 | 279 (218) | - | - | - | 8 9/16 | 8 9/16 | - | 267.44 | 14.22 | 14.22 | 265.43 | 12.22 | 1.5 (1.6) |
| BX 172 | 346 (283) | - | - | - | 11 5/32 | 11 5/32 | - | 333.07 | 14.22 | 14.22 | 331.06 | 12.22 | 1.5 (1.6) |
| BX 303 | 762 | 30 | 30 | - | - | - | - | 852.75 | 37.95 | 16.97 | 847.37 | 11.61 | 1.5 (1.6) |
General Notes for Style BX: Dimensions in mm. Figures stated are for information only. Please refer to the current version of the original standards for dimensional information. Tolerances: OD = outside diameter of ring, +0.00, -0.15. H = height of ring, +0.20, -0.00 - Variation in height throughout the entire circumference of any ring shall not exceed 0.10 within these tolerances. A = width of ring, +0.20, -0.00 - Variation in width throughout the entire circumference of any ring shall not exceed 0.10 within these tolerances. ODT = outside diameter of flat, ±0.05. C = width of flat, +0.15, -0.00. D = hole size, ±0.5. R = radius of ring [see general note (c)]. 23 deg = angle, ±0 deg 15 min. NOTE 1: One pressure passage hole is required per gasket as illustrated. The centreline of the hole shall be located at the midpoint of dimension C. NOTE 2: Machined radii located between all 23° angled sealing facings and the top and bottom flat faces, shall be 8% to 12% of the ring height 'H'.
Specialized Ring Type Joint (RTJ) Gaskets for Critical & Non-Standard Applications
Beyond the standard R, RX, and BX types, Dipti Metal offers a range of specialized RTJ solutions for unique challenges, often found in the oil & gas and petrochemical industries, ensuring optimal performance even in the most demanding conditions.
Designed for use in subsea wellhead, mudline, and tree equipment. To distinguish subsea RTJs, the suffix "S" is applied, indicating additional pressure passage holes in the ring cross-section. This is mandatory to prevent pressure lock when connections are assembled underwater. API 17D provides two drilling options for these holes: Option A and Option B.
- SBX Style: Other than the addition of pressure passage holes, all physical aspects of the API 17D SBX Ring Type Joint are the same as the API 6A BX Ring Type Joint.
- (Note: API 17D no longer supports the use of SRX ring type joints (API 6A RX Ring Type Joints with subsea drillings); however, for opening flanges on existing equipment, replacement SRX Ring Type Joints may still be used.)
These are combination rings consisting of two different sizes having the same pitch circle diameter. They are used for sealing RTJ flanges where the mating flanges have different ring groove geometry.
- Materials: Can be manufactured from standard materials, as well as exotic alloys.
- Note: Transition RTJs are available with either oval or octagonal facings and are not encompassed within the API or ASME specifications, requiring custom engineering.
- Blind RTJ: Used to blank off flanges and pipework. They consist of standard RTJs with integral solid metal centers. The height of the standard RTJ section is increased to allow the solid center to fit between the flanges and permit correct seating.
- Orifice RTJ: Used for restricting and/or measuring fluid flow. Sized to customer requirements, with the RTJ section height increased to accommodate the orifice plate thickness.
- Materials: Can be supplied in all standard and exotic materials.
- Note: Blind / Blank thicknesses are calculated in accordance with ASME B31.3 unless otherwise instructed.
An oval Ring Type Joint completely enclosed in a nitrile rubber coating. The metallic RTJ material is usually soft iron or low carbon steel.
- Functions:
- Used in pressure testing to minimize damage to flanges.
- The rubber contact points provide additional seals while protecting the flange surfaces.
- Increases assurance against corrosion that can occur between conventional RTJs and the engaged groove surfaces.
- Availability: Wide range of standard sizes, with special sizes available upon request.
Style R and RX Ring Type Joints can be supplied with PTFE inserts, strategically placed to reduce turbulent flow and eliminate gasket/flange erosion. For RX style, the insert is specially designed with radially drilled pressure passage holes so that the self-energizing performance is not impaired. The insert is located between the inside diameter of the RTJ and the bore of the flange, completely trapped on assembly.
- Benefits: Prevents fluid ingress in the annular space, mitigating corrosion/erosion in this sensitive area.
This specialized metallic RTJ design incorporates a primary RTJ geometry for the main metal-to-metal seal and an integrated secondary, highly conformable soft seal (e.g., restructured microcellular PTFE on a serrated metal core). This secondary seal is carefully dimensioned to fill any voids or crevices formed between the pipe-bore and the internal diameter of the standard RTJ on flange closure.
- Benefits: The highly conformable secondary seal adapts to extensively damaged flange sealing surfaces, eliminating fluid ingress and preventing further corrosion/erosion in this critical area. This design can be used for damaged flanges or as re-usable RTJs (after replacing the soft facing).
- Soft Sealing Materials: High-performance soft materials (such as flexible graphite or advanced PTFE compounds) can be applied to the serrated faces. Maximum operating temperatures depend on the metallurgy and facing material.
- Compliance: The underlying metallic RTJ conforms to the dimensional requirements of the relevant API or ASME standard.
- Applications: High-pressure applications where API or ASME ring groove style flanges are sealed, particularly for damaged flanges or as part of preventative maintenance programs.
A metallic gasket design incorporating spherical seating faces designed to suit a specific mating flange profile, providing a high-integrity, high-pressure/temperature metal-to-metal seal.
- Materials: Material specified softer than the flange material. Standard carbon and stainless steel grades, with alternatives available.
- Note: Dipti Metal requires a detailed drawing for non-standard Lens Rings as they are specific to DIN 2696.
Applications: Where Top Ring Type Joint (RTJ) Gaskets Exporters in India Deliver Critical Sealing
DIPTI METAL INDUSTRIES' high-performance Ring Type Joint (RTJ) Gaskets are widely trusted and utilized in a broad spectrum of critical industrial sectors and countless applications, consistently ensuring leak-free operations, robust system integrity, and enhanced safety in the most demanding environments:
- Oil & Gas Industry (Upstream, Midstream, Downstream): Indispensable for wellhead equipment, blowout preventers (BOPs), drilling risers, subsea systems, pipelines, valves, and high-pressure manifolds in exploration, production, and transportation.
- Petrochemical and Chemical Processing Industries: Critical for sealing flanges in reactors, high-pressure distillation columns, heat exchangers, valves, and pipelines handling aggressive chemicals, hydrocarbons, and high-temperature/pressure process fluids.
- Power Generation Plants (Thermal, Nuclear): Utilized in high-pressure steam systems, boiler connections, turbine components, and auxiliary equipment where extreme temperatures and pressures are prevalent.
- Offshore Platforms & Marine Applications: Essential for robust sealing in corrosive saltwater environments and high-pressure systems on offshore rigs, platforms, and marine vessels.
- Refineries: For sealing various process units, piping, and heat transfer equipment where process integrity at high pressures is paramount.
- Pressure Vessels: Ensuring high-integrity seals for critical containment applications, accommodating severe thermal cycling and pressure fluctuations.
- Valves & Pumps (High-Pressure/Temperature): For bonnets, covers, and critical static seals in pumps and valves exposed to harsh operating conditions.
- Hydrocarbon Processing: Any application involving the high-pressure and high-temperature transfer or processing of crude oil, natural gas, and their derivatives.
- Subsea Equipment: Crucial for reliability and resistance to external pressures and corrosive deep-sea environments.
DIPTI METAL INDUSTRIES, as a reliable Mumbai-based Ring Type Joint Gaskets manufacturer, API 6A/17D certified supplier, and Metallic Gasket exporter, is ready to supply your project needs for these critical sealing solutions with guaranteed quality and international compliance, ensuring the safest, most efficient, and longest-lasting operation of your high-pressure systems.
Uncompromising Quality Assurance & Certifications for Ring Type Joint (RTJ) Gaskets
Quality is the paramount concern at DIPTI METAL INDUSTRIES. We are a top supplier and manufacturer committed to operating under stringent ISO 9001 certified quality management systems, ensuring that every Ring Type Joint (RTJ) Gasket leaving our facility is fully traceable and meets the highest industry benchmarks. Our commitment to quality extends from meticulous sourcing of raw materials across all metallic grades to precision manufacturing, rigorous testing, and secure delivery, guaranteeing gaskets that perform reliably and safely in their intended extreme-pressure and high-temperature applications.
- All International Certifications & Test Certificates: Every RTJ Gasket is supplied with all mandatory international certifications and all test certificates, including EN 10204 3.1 Mill Test Certificates (MTCs) for raw materials. These verify chemical composition, mechanical properties, and full compliance directly from the source, a key aspect of our certified quality for all our metallic gaskets.
- Rigorous Manufacturing, Inspection & Testing: Our Ring Type Joint Gaskets undergo comprehensive visual and dimensional inspections throughout the manufacturing process. Key testing includes:
- Dimensional Accuracy: Precise verification of pitch diameter, width, height, radii, and angles against API 6A/17D and ASME B16.20 standards using advanced CMM and optical inspection tools, ensuring critical fit-up and sealing performance.
- Material Verification: Spectro analysis (PMI - Positive Material Identification) to verify correct alloy composition for all gasket materials, preventing mix-ups across different grades.
- Hardness Testing: Performed on each RTJ gasket to ensure the material is softer than the mating flange material (as specified by API 6A/17D and ASME B16.20), allowing proper deformation without damaging the flange groove.
- Surface Finish Measurement: Verification of sealing faces (Ra / RMS) to ensure they meet specified roughness requirements for optimal metal-to-metal sealing.
- Pressure Passage Hole Verification: For RX and BX type gaskets, inspection of pressure equalization holes. For Subsea (SBX) types, verification of drilling options.
- Visual Inspection: Examination for surface defects, burrs, sharp edges, and other imperfections that could compromise the seal.
- Third-Party Inspection (TPI) Facilitated: We regularly facilitate inspections by world-renowned third-party agencies such as TUV, Bureau Veritas (BV), Lloyd's Register (LR), SGS, DNV, and other client-nominated inspectors, to provide an additional layer of assurance and compliance verification, reinforcing our position as a leading global RTJ Gaskets manufacturer and API 6A/17D certified exporter of reliable metallic gaskets.
- Industry-Specific Compliance: We routinely supply Ring Type Joint Gaskets with full compliance to major international standards (e.g., PED, NORSOK, NACE MR0175/ISO 15156 for sour service) and client project specifications for sectors like Oil & Gas, Petrochemical, and Power Generation, ensuring all our gaskets are fit for critical high-pressure and high-temperature sealing.
Global Export Network: Worldwide Distributor & Exporter of Ring Type Joint (RTJ) Gaskets
DIPTI METAL INDUSTRIES is a proud Worldwide Exporter, Global Supplier, Leading Dealer, and Major Stockist of Ring Type Joint (RTJ) Gaskets in all grades and types, with an extensive network that extends to **over 190 countries worldwide**. We ensure timely and compliant delivery of our premium precision-engineered metallic gaskets to major industrial hubs and critical infrastructure projects across the globe, with a strong focus on **Oil & Gas (Upstream, Midstream, Downstream)**, **Petrochemical**, **Power Generation**, and **Offshore sectors worldwide**, solidifying our position as a top international trading partner for these essential high-integrity sealing solutions. The countries and cities listed below highlight our established key markets and are illustrative of our truly global reach for RTJ Gaskets.
Explore Our RTJ Gaskets Extensive Global Reach (Illustrative Markets)
- Germany: Frankfurt, Hamburg, Munich, Berlin (Primary for Power Generation, Chemical Plants, Heavy Engineering)
- United Kingdom: London, Manchester, Aberdeen, Glasgow (Primary for Oil & Gas, Energy, Offshore)
- France: Paris, Lyon, Marseille (Key for Energy, Nuclear, Petrochemical Facilities)
- Italy: Milan, Rome, Genoa (Key for Petrochemical, Power Sector, Industrial)
- Netherlands: Rotterdam, Amsterdam (Primary for Refineries, Offshore, Chemical Processing)
- Spain: Madrid, Barcelona, Valencia (Key for Industrial Infrastructure, Power, Petrochemical)
- Sweden: Stockholm, Gothenburg (Advanced Energy, Offshore)
- Belgium: Brussels, Antwerp (Chemical, Petrochemical)
- Austria: Vienna, Graz (Industrial, Energy)
- Switzerland: Zurich, Geneva (High-Tech Industrial, Power)
- Portugal: Lisbon, Porto (Power, Heavy Industrial)
- Ireland: Dublin, Cork (Energy, Specialized Chemical)
- Norway: Oslo, Stavanger (Offshore Oil & Gas, demanding environments)
- Denmark: Copenhagen, Aarhus (Energy, Industrial)
- Finland: Helsinki, Tampere (Power, Heavy Industry)
- Poland: Warsaw, Krakow (Large Industrial Projects, Power Generation)
- Czech Republic: Prague, Brno (Industrial Manufacturing, Energy)
- Hungary: Budapest, Debrecen (Power, Chemical)
- Greece: Athens, Thessaloniki (Power Plants, Industrial)
- Romania: Bucharest, Cluj-Napoca (Energy Sector, Industrial Growth)
- Japan: Tokyo, Osaka, Nagoya (Primary for Advanced Power Plants, Petrochemical)
- China: Shanghai, Guangzhou, Beijing (Key for Power, Petrochemical, Heavy Manufacturing, Infrastructure)
- India: Mumbai, Chennai, Delhi, Bangalore (Local Markets - Major Power, Oil & Gas, Chemical, Offshore Demand)
- South Korea: Seoul, Busan, Ulsan (Primary for Shipbuilding, Petrochemical, Advanced Power, Offshore)
- UAE: Dubai, Abu Dhabi, Sharjah (Primary for Oil & Gas, Power Generation, Petrochemical Plants)
- Saudi Arabia: Riyadh, Jeddah, Dammam (Primary for Oil & Gas, Refining, Advanced Power Infrastructure)
- Singapore: Singapore City (Key for Petrochemical, Refinery Hub, Power, Offshore)
- Malaysia: Kuala Lumpur, Johor Bahru (Oil & Gas, Power Plants, Petrochemical)
- Indonesia: Jakarta, Surabaya (Energy, Offshore, Large Industrial Projects)
- Thailand: Bangkok, Laem Chabang (Power, Petrochemical, Offshore)
- Vietnam: Ho Chi Minh City, Hanoi (Energy, Heavy Industrial, Petrochemical)
- Philippines: Manila, Cebu City (Power, Industrial, Offshore)
- Bangladesh: Dhaka, Chittagong (Power, Industrial)
- Hong Kong: Hong Kong (Critical Infrastructure Projects)
- Taiwan: Taipei, Kaohsiung (Petrochemical, Advanced Power)
- Sri Lanka: Colombo, Kandy (Power Plants, Industrial)
- Qatar: Doha, Mesaieed (Oil & Gas, LNG, Petrochemical)
- Kuwait: Kuwait City, Ahmadi (Oil & Gas, Refinery)
- Oman: Muscat, Sohar (Oil & Gas, Industrial, Power)
- Bahrain: Manama, Sitra (Petrochemical, Refining)
- Egypt: Cairo, Alexandria (Oil & Gas, Power, Petrochemical)
- USA: Houston, Los Angeles, New York, Chicago, New Orleans (Primary Market for Oil & Gas EPCs, Power Generation, Petrochemical)
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal (Key for Oil & Gas, Utilities, Major Power Projects, Offshore)
- Mexico: Mexico City, Monterrey, Veracruz (Key for Energy Sector, Refining, Industrial Plants)
- Brazil: São Paulo, Rio de Janeiro, Belo Horizonte (Key for Oil & Gas, Petrochemical, Power, Offshore)
- Argentina: Buenos Aires, Cordoba (Key for Energy, Industrial)
- Colombia: Bogotá, Barranquilla (Oil & Gas, Refining, Power)
- Peru: Lima, Callao (Mining, Energy Infrastructure)
- Chile: Santiago, Valparaíso (Mining, Power)
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg (Key for Power Generation, Mining, Petrochemical)
- Nigeria: Lagos, Port Harcourt, Abuja (Primary for Oil & Gas, Energy Sector, Offshore)
- Algeria: Algiers, Oran (Oil & Gas, Power Generation, Petrochemical)
- Ghana: Accra, Kumasi (Energy, Industrial)
- Kenya: Nairobi, Mombasa (Power, Industrial)
- Australia: Sydney, Melbourne, Perth, Brisbane (Primary for Mining, Oil & Gas, Power Generation, Offshore)
- New Zealand: Auckland, Wellington (Key for Energy, Industrial Projects)
Why Choose Dipti Metal Industries for Your Premium Ring Type Joint (RTJ) Gaskets Needs? Your Global Advantage
- Premier Global Manufacturer & Comprehensive Expertise: As a leading global Ring Type Joint (RTJ) Gaskets Manufacturer, largest API 6A/17D certified Stockist, top R/RX/BX RTJ Gaskets Supplier, and best Metallic Gasket Exporter, Dipti Metal Industries offers unparalleled expertise in producing and supplying a vast range of high-integrity metallic sealing solutions. We guarantee availability for your critical high-pressure and high-temperature projects worldwide. We are a reliable and leading manufacturing and trading partner.
- Uncompromising Quality, Precision, & Traceability: Dipti Metal Industries adheres to ISO 9001 certified processes at every stage of manufacturing. This encompasses meticulous sourcing of certified raw metal stock, precision CNC machining, accurate dimensional verification, precise surface finish control, and comprehensive final inspection including hardness testing. We provide full material traceability to specific heats and standards with EN 10204 3.1 MTCs, guaranteeing every RTJ gasket meets stringent API 6A, API 17D, and ASME B16.20 standards for superior integrity and flawless performance. Each RTJ manufactured to an API standard is identified by low stress stamping with style, ring number, API license number, material reference, Product Specification Level 4 (PSL-4), a unique Dipti Metal identification number, and month and year of manufacture.
- Extensive Product Range & Advanced Custom Fabrication: We offer a truly comprehensive selection of RTJ types (R Oval, R Octagonal, RX, BX), an extensive array of metallic grades, and all standard dimensions. Furthermore, our state-of-the-art manufacturing capabilities allow for precision machining and custom manufacturing of gaskets to your exact drawings, precise specifications, and unique project requirements, ensuring a perfect, tailor-made fit for any challenging application, including non-standard flange designs and specialized RTJs like Subsea, Transition, Blind/Orifice, Rubber Coated, PTFE Inserted, Dual-Seal, and Lens Rings.
- Expert Technical Consultation & Engineering Support: With substantial decades of accumulated experience in the highly specialized gasket and sealing industry, our dedicated and highly skilled technical team possesses profound, in-depth knowledge of metallurgy, advanced sealing principles, international standards, and diverse industry applications. We are readily available to provide comprehensive assistance with precise material selection (including specific metal grades and hardness requirements), ensure compliance with international and local standards (e.g., API 6A, ASME B16.20, API 17D, NACE MR0175/ISO 15156), and offer expert application guidance for achieving optimal pipeline integrity, superior equipment sealing, and extended operational longevity in extreme environments.
- Robust Global Export & Reliable Supply Chain: As a dedicated worldwide exporter, Dipti Metal Industries efficiently serves a vast and expanding global clientele. We ensure timely delivery, efficient logistics, and exceptional customer service to major industrial hubs across North America, Europe, the Middle East, Southeast Asia, Australia, Africa, and South America. We handle all aspects of international shipping with expertise for Ring Type Joint Gaskets, including adherence to proper packaging and handling requirements.
- Competitive Pricing & Superior Value Proposition: Leveraging strategic global sourcing partnerships, streamlined manufacturing processes, and highly efficient operations, Dipti Metal Industries consistently delivers premium quality industrial RTJ Gaskets at exceptionally competitive prices, ensuring excellent value for your investment and significantly contributing to optimized project costs and enhanced profitability for our clients.
Get a Quote Today for Your Ring Type Joint (RTJ) Gasket Requirements!
Are you searching for dependable, high-performance Ring Type Joint (RTJ) Gaskets (R, RX, or BX types) for your critical industrial applications, including oil & gas, petrochemical, power generation, or offshore projects? Contact Dipti Metal Industries, your expert global RTJ gasket supplier, manufacturer, and exporter, today to discuss your specific requirements or to request a personalized, custom quote. Our knowledgeable and responsive team is dedicated to providing you with the most effective, safest, and most reliable high-pressure metallic sealing solutions that guarantee long-term operational excellence, enhanced system integrity, and unparalleled project success in the most demanding environments. We are the best and leading partner for all your needs, offering a large and comprehensive range with top quality.
Price guidance (non-binding): USD 10–15000 per gasket depending on size, type (R/RX/BX), metal grade, standards, and quantity. Final prices are quotation-based.
Ring Type Joint (RTJ) Gaskets — Frequently Asked Questions
RTJ gaskets are designed for high-pressure applications. R-type up to 5,000 psi, RX-type up to 10,000 psi, and BX-type up to 20,000 psi, as per API 6A and ASME B16.20.
Common materials include Soft Iron, Low Carbon Steel, Stainless Steels (304, 316L, 347, 410), Duplex/Super Duplex, and Nickel Alloys (Monel®, Inconel®, Hastelloy®). Material selection depends on service conditions and flange hardness.
No, standard solid metal RTJ gaskets (R, RX, BX types) are designed for single use. It is recommended to replace them whenever a flanged connection is broken to ensure seal integrity.
Subsea RTJ gaskets (e.g., SBX type) are designed for underwater wellhead equipment, featuring additional pressure passage holes to prevent pressure lock during subsea assembly, conforming to API 17D.
Our RTJ gaskets are manufactured and certified to API 6A, API 17D, and ASME B16.20. NACE MR0175/ISO 15156 compliant materials are available for sour service.
Yes, we offer custom manufacturing for specialized RTJ types like Transition Rings, Blind/Orifice Rings, Rubber Coated RTJs, and RTJs with PTFE Inserts to meet unique project specifications.
What Our Customers Say
“The API 6A BX Ring Type Joint Gaskets from Dipti Metal were indispensable for our high-pressure wellhead installation in Saudi Arabia. Their precision machining and certified materials ensured a flawless, leak-free connection under extreme conditions. Excellent product and reliable delivery.”
— Ahmed A. – Drilling Operations Manager, Upstream Oil & Gas, Saudi Arabia
“We consistently rely on Dipti Metal for ASME B16.20 R-type RTJ gaskets for our petrochemical refinery in Oman. Their consistent quality, full material traceability, and adherence to international standards make them a trusted partner for our critical process piping. Great service and prompt supply.”
— Mohammed H. – Procurement Lead, Petrochemical Refining, Oman
“Dipti Metal’s RX RTJ gaskets performed exceptionally well in our high-temperature steam lines at the power plant in Germany. Their ability to handle both high pressure and thermal cycling without failure is impressive. The technical support provided for material selection was also invaluable.”
— Johan P. – Senior Engineer, Power Generation, Germany
“For our subsea equipment fabrication in Brazil, Dipti Metal delivered API 17D SBX gaskets with perfect precision and all necessary documentation. Their expertise in specialized RTJ solutions and efficient global logistics ensures our critical offshore projects stay on schedule.”
— Carlos R. – Project Manager, Offshore & Subsea, Brazil
Contact Us
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide exporter of quality Ring Type Joint (RTJ) Gaskets.