Ningbo Kaxite Sealing Materials Co., Ltd.
API 6A · ASME B16.20 · ISO 9001

China Ring Joint Gasket Manufacturer – Oval, Octagonal, RX & BX for High‑Pressure Sealing

Kaxite Sealing – a trusted RTJ gasket supplier offering oval ring joint gaskets, octagonal, RX, BX, and lens styles in stainless steel, Inconel, Monel, and soft iron – fully compliant with API 6A and ASME B16.20. Serving oil & gas, petrochemical, and subsea industries worldwide with factory-direct pricing.

MOQ: 10 pcs Lead Time: 7‑15 days FOB Ningbo / EXW / CIF Custom Materials & Sizes Free Sample Available
15+
Years Expertise
60+
Countries Served
API 6A
Compliant
ASME B16.20
Standard Compliant
ISO 9001
Certified Quality
100%
Traceability (MTC)

Ring Joint Gasket Solutions by Industry

Engineered RTJ gaskets for extreme pressure, temperature, and corrosive environments – tailored to your flange spec.

🛢️

Oil & Gas

Oval & octagonal ring joint gaskets for pipelines, wellheads, and refinery flanges – up to 20,000 psi

🌊

Subsea & Offshore

RX, BX, and AX ring gaskets for subsea wellhead connectors and high‑pressure riser systems

🧪

Chemical & Petrochemical

Inconel, Monel, and stainless steel ring gaskets for corrosive media and high‑temperature reactors

Power Generation

RTJ gaskets for steam turbines, boiler connections, and high‑temperature piping systems

🚢

Marine & Shipbuilding

CCS‑approved ring joint gaskets for marine engines, propeller shafts, and seawater systems

🔧

Custom OEM / ODM

Any material, size, and style – custom to your engineering drawing or sample

Why Industry Leaders Choose Kaxite

  • ✅ ISO 9001:2015 certified manufacturer
  • ✅ API 6A & ASME B16.20 compliant
  • Oval, octagonal, RX, BX, lens, AX, IX styles
  • ✅ Materials: SS304, SS316, SS321, Inconel, Monel, Titanium
  • ✅ Custom sizes and tight tolerances
  • ✅ Full traceability – MTC per EN 10204 3.1
  • ✅ Factory-direct – competitive wholesale pricing
  • ✅ 24/7 technical support and global logistics
API 6A ASME ISO 9001 China Factory

Frequently Asked Questions

Q: What ring joint gasket styles do you offer?
A: Oval, octagonal, RX, BX, lens, AX, IX, and VX – all standard sizes and custom dimensions.
Q: What materials are available?
A: Stainless steel (304, 316, 321), Inconel, Monel, Titanium, Hastelloy, soft iron, and carbon steel.
Q: Are your gaskets API 6A and ASME compliant?
A: Yes, all ring joint gaskets meet API 6A and ASME B16.20 standards.
Q: What is your typical lead time?
A: Standard sizes 7‑15 days; custom orders 15‑20 days. Express service available.
Q: Can you produce custom non‑standard sizes?
A: Absolutely. We offer OEM/ODM services – just provide your drawing or sample, and we’ll match your exact requirements.

Need Ring Joint Gaskets at Factory Prices?

Tell us your style, material, and size – our engineering team will respond within 24 hours with a tailored quote and technical support.

Get Your Quote Now →
📞 +86-574-87527771 ✉️ [email protected] 💬 WhatsApp

About Us

  • Ningbo Kaxite Sealing Materials Co., Ltd.

    Ningbo Kaxite Sealing Materials Co., Ltd. is based in Ningbo, Zhejiang Province, China. Kaxite is one of the biggest sealing and heat preservation products manufacturer in China. Kaxite supply the overall solution of Metal Gaskets, Non-metallic Gaskets, Braided Packings, Compressed Gasket Sheets. To assure create more valve for customers from all over the world.

    As a professional manufacturer and supplier, Kaxite can offer a widely range of sealing raw materials and products,more competitive price, prompt feedback, fast delivery time & keep the order updated. We promise Kaxite Gasket & Seals is your good choice.

    The products are mainly applied in the industries of aviation, shipbuilding, petroleum chemical industry, foodstuff and medicine, with the good merits of heat preservation, heat insulation, seal and insulation.

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News

  • 05-15
    2024
    Blog
    How Does a Ring Joint Gasket Work?
    Ring joint gaskets work by creating a seal between the two flange faces under the compressive loading of the flange bolts. When under load the gasket deforms and flows into the microstructure irregularities of the flange groove in which the RTJ gasket sits.
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    How Does a Ring Joint Gasket Work?
  • 05-15
    2024
    Blog
    Why Are Ring Joint Gaskets Important?
    Ring joint gaskets are important because they provide a strong seal for demanding applications. Ring joint gaskets can withstand up to 20,000 psi at elevated temperatures and in corrosive environments.
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    Why Are Ring Joint Gaskets Important?
  • 05-15
    2024
    Blog
    What Do Ring Joint Gaskets Do?
    Ring joint gaskets provide a reliable seal in several applications that operate in high-pressure and high-temperature flange environments.
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    What Do Ring Joint Gaskets Do?
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