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Precision Ring Joint Gaskets

ASME B16.20 & API 6A Certified | High-Pressure, High-Temperature Sealing Solutions for Oil & Gas, Marine, Power Generation

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About Wenzhou Jingwei Seal Technology

Wenzhou Jingwei Seals Technology Co., Ltd. is a leading manufacturer and supplier of high-performance gaskets and sealing solutions. Specializing in Ring Joint Gaskets (RTJ), we serve critical industries including oil & gas, petrochemical, marine, power generation, and transportation.

Our gaskets are engineered for extreme conditions—high pressure and high temperature—ensuring reliable performance in demanding applications. Manufactured with precision on CNC machines, all products comply with ASME B16.20 and API 6A standards.

ISO 9001 Certified

Quality management systems ensure consistent product excellence and customer satisfaction.

Global Reach

Trusted by national and international clients across diverse industrial sectors.

Factory Display - Wenzhou Jingwei Seal Technology

Our Premium Gasket Products

Engineered for reliability in high-pressure environments. All gaskets manufactured to ASME B16.20, API 6A, and API 17D standards.

High Temperature 316L BX162 Ring Type Joint Gasket

316L BX162 RTJ Gasket

  • Material: 316L Stainless Steel
  • Type: BX Ring, High Temp
  • Standard: ASME B16.20
  • Application: High-pressure flanges
Incoloy 825 BX154 Flat Ring Gasket

Incoloy 825 BX154 Gasket

  • Material: Incoloy 825
  • Type: BX Flat Ring
  • Standard: ISO9001
  • Corrosion-resistant for harsh environments
API 6A BX 158 High Pressure Gasket

API 6A BX158 Gasket

  • Material: Carbon/SS Options
  • Type: BX Ring
  • Standard: API 6A, ASME B16.20
  • High-pressure wellhead systems
RX24 RTJ Flange Gasket

RX24 RTJ Flange Gasket

  • Material: SS316, F5, etc.
  • Type: RX Ring, Oval Profile
  • Standard: API 6A
  • Reusable sealing design
API 17D R67 321SS Oval Gasket

API 17D R67 Oval Gasket

  • Material: 321SS
  • Type: Oval Ring
  • Standard: API 17D (Subsea)
  • Deepwater & offshore use
321SS Octagonal Gasket

321SS Octagonal Gasket

  • Material: 321 Stainless Steel
  • Type: Octagonal Profile
  • High-temperature stability
  • ASME B16.20 compliant
Subsea Gasket

Proprietary Subsea Gaskets

  • Custom designs available
  • API 17D & ISO 10423
  • Deep-sea pressure rated
  • Corrosion-resistant alloys
Bonnet Seal Ring

Bonnet Seal Ring

  • Material: SS304, SS316, F5
  • Type: Ring Joint or RTJ
  • Valve bonnet applications
  • High-cycle durability
View All 101 Products

Why Choose Our Gaskets?

Engineered for performance, reliability, and compliance in extreme industrial environments.

🔍

Rigorous Testing

Every gasket undergoes strict dimensional and material verification to ensure compliance with ASME and API standards.

✅

Quality Qualified

ISO9001 certified manufacturing ensures consistent quality, traceability, and safer sealing performance.

🚚

Just-in-Time Delivery

Reliable logistics and inventory management ensure on-time delivery to keep your operations running.

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24/7 Online Support

Our team is ready to assist with technical queries, custom designs, and urgent inquiries around the clock.

101+
Products Available
20+
Global Clients
ISO9001
Certified Quality
ASME/API
Standards Compliant

Frequently Asked Questions

What is a Ring Joint Gasket (RTJ)?

A Ring Joint Gasket is a solid metal gasket designed to seal high-pressure flange connections. It works by being compressed into a machined groove, creating a metal-to-metal seal ideal for extreme pressure and temperature conditions.

What materials do you offer?

We manufacture gaskets in 304SS, 316SS, 321SS, 347SS, F5, F11, Incoloy 825, Monel, Nickel 200, and carbon steel. Custom alloys available upon request.

Are your gaskets compliant with industry standards?

Yes. All our RTJ gaskets are manufactured to ASME B16.20 and API 6A specifications. Subsea gaskets meet API 17D requirements.

Can you provide custom gaskets?

Absolutely. We offer custom prototyping and production for non-standard sizes, materials, and designs. Contact us with your specifications.

What industries do you serve?

Our gaskets are used in oil & gas, petrochemical, marine, offshore, power generation, and industrial manufacturing sectors.

Get in Touch

Reach out for quotes, technical support, or custom gasket solutions.

Contact Information

Name: Mr. Jeff Wang

Phone: +86 18757773759

Email: [email protected]

Address: No. 500, Binhai 12th Road, Longwan District, Wenzhou City, Zhejiang Province, China

Website: ringjoint-gasket.com

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