Ring joint gasket, a high-pressure gasket is largely used in offshore petrochemical and natural gas industry applications Ring Joint Gasket are heavy duty, high-pressure gaskets largely used in offshore petrochemical and natural gas industry applications. They are precision-engineered components designed to be used in conjunction with precision-machined flanges.All our Ring Joints are manufactured according to ASME B16.20 - API Std 6A BS EN 12560-5 Materials:The gasket material is selected on a number of grounds primarily; chemical compatibility with the media and the hardness of the flange. The gasket material ideally needs to be roughly 30 Brinell less than the flange material to ensure sufficient deformation of the gasket without damaging the flange facing.

The principa types of material are:

METAL MAXIMUM HARDNESS IDENTIFICATIONROCKWELL B SOFT IRON 56 (90 BHN) D LOW CARBON STEEL 68 (120BHN) S F5 (4/6% Cr. 1/2% Mo) 72 (130BHN) F5 410 ALLOY STEEL 86 (170BHN) S410 304 STAINLESS STEEL 83 (160BHN) S304 304L STAINLESS STEEL 83 (160BHN) S304L 316 STAINLESS STEEL 83 (160BHN) S316 316L STAINLESS STEEL 83 (160BHN) S316L 347 STAINLESS STEEL 83 (160BHN) S347 321 STAINLESS STEEL 83 (160BHN) S321 825 INCONEL 93 (200BHN) 825 Other stainless and super alloy steels, Duplex, Monel, Inconel, Incoloy, Hastalloy and other materials are available.

API Ring Joint Gasket