As a leading ring joint gasket manufacturer and supplier, Kaxite Seals delivers precision-machined RTJ gaskets engineered for the most demanding high-pressure and high-temperature applications. Our API 6A gaskets, ASME B16.20 ring joint gaskets, and custom-profile solutions are trusted worldwide in oil & gas, petrochemical, refining, and power generation. We offer bulk ring joint gasket wholesale with fast delivery, full material traceability, and OEM services. Request a free sample or quote today and secure your critical connections.
Why Kaxite Seals for Ring Joint Gaskets?
ISO 9001 certified with 25+ years of expertise, we supply R, RX, and BX styles in all standard sizes and pressure classes. Our custom ring joint gaskets are available in exotic alloys (Inconel, Hastelloy, Duplex) with NACE MR0175 compliance for sour service. We provide competitive factory pricing, express production for urgent orders, and global shipping. Every gasket comes with a Material Test Report (MTR) and Certificate of Conformance.
Ring joint gaskets (RTJ) are metal sealing elements designed for use with RTJ flange grooves (raised face or ring-type joint). They are pressure-energised: when bolted, the gasket is compressed into the groove, and internal pressure forces the gasket's sealing surfaces against the groove walls, creating a metal-to-metal seal. This design ensures zero leakage even under extreme pressure fluctuations, vibration, and thermal cycling. Kaxite Seals manufactures octagonal, oval, RX, and BX profiles to match every standard and custom flange specification.
The correct material selection is critical for service life and safety. Kaxite Seals offers a wide range of metals to suit your media, temperature, and pressure requirements.
| Material Grade | Common Designation | Max. Temperature | Key Characteristics & Applications |
|---|---|---|---|
| Soft Iron | ASTM A105 | 800°F (427°C) | Excellent ductility, general hydrocarbon service, not for corrosive fluids. |
| Low Carbon Steel | ASTM A350 LF2 | 800°F (427°C) | Higher strength, common in refineries. |
| Stainless Steel 304/304L | ASTM A182 F304/F304L | 1500°F (816°C) | Good general corrosion resistance, chemical and petrochemical. |
| Stainless Steel 316/316L | ASTM A182 F316/F316L | 1500°F (816°C) | Superior corrosion resistance (chlorides), offshore and marine. |
| Duplex Steel | UNS S31803/S32205 | 600°F (316°C) | High strength, excellent stress corrosion cracking resistance. |
| Inconel 600 | UNS N06600 | 2150°F (1177°C) | Outstanding oxidation and corrosion resistance at high temps. |
| Inconel 625 | UNS N06625 | 1800°F (982°C) | Exceptional strength, fatigue resistance, ideal for sour service (H₂S). |
| Hastelloy C276 | UNS N10276 | 1900°F (1038°C) | Excellent resistance to aggressive chemicals, wet chlorine, and pitting. |
Kaxite Seals manufactures all standard RTJ profiles and can produce custom geometries per your drawing.
We supply gaskets for all nominal pipe sizes (NPS) and pressure classes, with full interchangeability per ASME B16.20 and API 6A.
| NPS (in) | Pressure Class | R-style Ring No. | RX-style Ring No. | BX-style Ring No. |
|---|---|---|---|---|
| 2 | 1500 | R24 | RX24 | BX152 |
| 4 | 2500 | R37 | RX37 | BX154 |
| 6 | 900 | R45 | RX45 | BX156 |
| 8 | 1500 | R57 | RX57 | BX159 |
| 12 | 600 | R72 | RX72 | BX164 |
* For full size and class listings, download our catalogue or contact our sales team.
Metal-to-metal seal ensures no fugitive emissions, ideal for hazardous and volatile fluids.
Suitable for pressures up to 20,000+ psi and temperatures from cryogenic to 1000°C+.
Properly installed gaskets can be reused, reducing maintenance costs and downtime.
Every gasket comes with MTR, C of C, and optional NACE/EN 10204 3.1 certification.
Need ring joint gaskets for a critical shutdown or project?
We offer same-day quotations, stock items for immediate dispatch, and expedited manufacturing for custom orders.
Follow these steps to ensure a leak-free seal with your Kaxite ring joint gasket:
For detailed torque values and procedures, consult our FAQ or contact our technical support.
Q: What is the difference between R, RX, and BX ring joint gaskets?
A: R-style is standard for general high-pressure piping. RX-style is pressure-energised and can seal with lower bolt torque; it is often interchangeable with R-style in the same groove. BX-style is designed for extreme pressures (API 6A, up to 20,000 psi) and has a larger sealing shoulder; it is not interchangeable with R or RX. Each requires a specific flange groove.
Q: Can I reuse a ring joint gasket?
A: Yes, if it shows no signs of deformation, flattening, galling, or deep scratches. However, for critical services, we recommend using a new gasket to guarantee performance. Kaxite Seals can supply replacement gaskets quickly from stock or with short lead times.
Q: How do I select the correct material for my application?
A: Consider the fluid corrosiveness, temperature, and pressure. For H₂S (sour service), use Inconel 625 or Duplex. For high-temperature oxidising, use Inconel 600. For general chemical, 316L stainless steel is common. Our material selection guide and technical team can help you choose.
Q: What standards do Kaxite ring joint gaskets comply with?
A: We manufacture to ASME B16.20, API 6A, API 17D, ISO 10423, NACE MR0175/ISO 15156, and customer-specific drawings. Third-party inspection is available upon request.
Q: What is your MOQ and lead time?
A: We have no fixed MOQ – we support small trial orders and bulk wholesale. Standard material gaskets are often in stock for immediate dispatch. Custom alloy orders typically ship within 7–15 days. Contact us for your specific requirements.
Q: How can I get a sample or place an order?
A: Simply fill out our inquiry form or email us. We will respond within 4 hours. We accept T/T, L/C, and other payment terms. Free samples are available for qualified projects.
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