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Kemicon Industrial LLP

Product

Ring Type Joint (RTJ) Gasket

Metal-to-metal sealing for critical high-pressure flanges.

Ring type joint (RTJ) gasket machined for high-pressure flange service
RTJ

RTJ gasket overview

As an RTJ gasket manufacturer, Kemicon produces Ring Type Joint gaskets in Oval Ring Joint, Octagonal Ring Joint, RX, and BX profiles, machined from certified metals with full material traceability for refinery and high-pressure gasket service. Manufactured by Kemicon Industrial LLP in Ahmedabad, India, to ASME B16.20 and other applicable international standards, with full Material Test Reports (MTR) available with every order.

Profile

OvalOctagonalRXBX
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Standard

ASME B16.20 / API 6A (where applicable)

Profiles

Oval, Octagonal, RX, BX

Materials

Soft Iron, Low Carbon Steel, SS 304, SS 316, Inconel, Monel

Hardness

Controlled to protect flange groove

Applications

  • High-pressure oil & gas flanges
  • Refinery and petrochemical RTJ flanges
  • Wellhead and Christmas tree equipment
  • High-pressure process piping
  • Critical metal-to-metal sealing joints

Advantages

  • Metal-to-metal sealing for critical service
  • Oval Ring Joint, Octagonal Ring Joint, RX Ring Joint, and BX Ring Joint profiles
  • Machined from certified metals
  • Full MTR documentation
  • Precision dimensional accuracy

Ring Type Joint (RTJ) Gasket specifications

StandardASME B16.20 / API 6A (where applicable)
ProfilesOval, Octagonal, RX, BX
MaterialsSoft Iron, Low Carbon Steel, SS 304, SS 316, Inconel, Monel
HardnessControlled to protect flange groove
Pressure classHigh-pressure RTJ service
TraceabilityMTR with every order

Final specifications depend on application conditions. Share your media, pressure, temperature, and flange details for an exact recommendation.

Frequently asked questions

What is the difference between Oval and Octagonal RTJ gaskets?
The Oval Ring Joint gasket seals on the radius of the ring and is typically used in older flange designs. The Octagonal Ring Joint gasket seals on the angled faces and is preferred for modern RTJ flanges. RX and BX ring joint gasket profiles are used for specific high-pressure API applications.
What RTJ gasket dimensions do you manufacture?
We manufacture RTJ gasket dimensions to ASME B16.20 ring sizes (R-numbers) for standard flange classes, plus custom dimensions for API 6A wellhead equipment and non-standard flanges. Share your flange size and pressure class for the correct ring number.
How do I choose between RX and BX ring joint gaskets?
RX ring joint gaskets are used on standard API flanges and are self-energising, sealing more effectively as internal pressure increases. BX ring joint gaskets are used on high-pressure API 6A wellhead and Christmas tree connections. The correct choice depends on your flange and equipment specification.

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Knowledge base

Guides related to RTJ gaskets

Engineering-led articles to help you specify and select correctly.

Have a sealing requirement? Let's discuss.

Talk to our technical team and get the right specification, every time.

Typical response within one business day

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