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IX Type Ring Joint Gaskets

IX Type Ring Joint Gaskets

IX type Ring Joint Gaskets The metal ring joint gasket is made of metal material by forging and heat treatment and machining . IX Seal Rings are designed and used where NORSOK CFC(Compact Flange Connections) are in use. The rings come in three different kinds of steel and are coated with PTFE in...

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IX type Ring Joint Gaskets

The metal ring joint gasket is made of metal material by forging and heat treatment and machining . IX Seal Rings are designed and used where NORSOK CFC(Compact Flange Connections) are in use. The rings come in three different kinds of steel and are coated with PTFE in varying colors in order to distinguish between them (Standard identification NORSOK) The designed or materials shall be selected, so that main sealing ares can not be subject to corrosion.

Typical minimum yield stress and ultimate stress of the seal ring material shall at maximum design temperature be 300MPa and 360MPa, respectively, in order to allow for reasonably elastic spring-back. Lower strength may be used, but is not recommended. The user is responsible for selecting a seal ring material which is suitable for the service medium and the design temperature conditions. Seal ring materials are commonly chosen to be compatible with the flange material, I.e. Duplex seal ring in duplex flange.

IX Seal Ring Selection:

Flange Material

Service Temp.

Seal Ring Material

Seal Ring PTFE Color

Carbon Steel

-50oC to +250oC

CS,316L,Low Alloy Steel (AISI4140)

Blue

Stainless Steel

-50oC to +250oC

22Cr Duplex

Yellow

Stainless Steel

-50oC to +250oC

17/4-PH

Orange

Stainless Steel

-101oC to +250oC

Nickel Alloys (Inconel 625 etc)

Black

IX Seal Rings shall be coated with 10 to 30 PTFE coating. The colour of the coating shall follow the requirement above table. 

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