Abstract: A gasket made of nickel, nickel alloy or stainless steel has a sealing face to be engaged by a knife-edge of a joint part. The gasket is cut to form a concave groove, a stepwise reduction in thickness or a sloping cut-out at the sealing face. The sealing face is protected from contact by an adjacent higher land portion. During processing, the gaskets can be stacked or carried on a rest. Any contact occurs at the land portion rather than at the sealing faces, which are protected by the land portions from contact. Dents or scratches in the sealing faces are prevented.

Abstract: A gasket 13 is made of nickel, nickel alloy or stainless steel. A portion which is made a sealing face 1s by abutting on a knife-edge 2b of a joint is cut so as to form a concave groove 10. The concave groove 10 has a structure one step lower than land portions 11a, 11b comprised of both sides 1a. In the process from the production of the gasket to its installation, the land portions prevent the gaskets or the gasket and a rest from contacting with each other. Accordingly, no dent and no scratch is formed.