Made from various materials, as asbestos composite material, non asbestos composite material, graphite composite material, all metal materials. Auto engine cylinder head gasket: These types of cylinder head gaskets products are according to the users requirement. 1. Adopted different material; 2. Surface without disposal/pint black lead/print organise silicon sticky-proof material 3. The color of the sealing line around the hole can be printed according to the users requirement.