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DYG.T.S. metal jacketed gaskets are composed of carefully selected cushion materials such as soft asbestos millboard, ceramic fibre, cerabestos, compressed asbestos sheet and P.T.F.E. with external metal jacket of carbon steel, stainless steel, copper, 5CR-0.5MO alloy steel, etc. They are widely used on piping flanges, joints of machinery and heat exchangers because they can be fabricated not only to a regular round shape but also to other irregular shapes such as oval, rectangular, etc. with additional rib or seal multi-pass heat exchangers. An increased dem- and has recently been seen for a special type having attached expanded graphite tapes on both sealing faces to increase salability. |