▎ 摘　　要

NOVELTY - The utility model claims a cylinder cover gasket, a metal cylinder head gasket is circular ring, the circular ring is inner and outer double-layer structure, wherein the inner layer is a graphene layer, the outer layer is a stainless steel layer. Graphene is a heat insulation material, the cylinder cover acts as a heat insulating layer and a sealing gasket, so that the cylinder head gasket and the combustion chamber head gasket to the cylinder under the condition of high temperature is not easy to be deformed, and the leak tightness is good, the service life is greatly increased.