One of the material is metal -- asbestos gasket.The asbestos is sandwiched between wire or scrap metal and coated with copper or steel.This kind of steel pad thickness 1.2-2mm, has very good elasticity and heat resistance, can be used repeatedly, but the strength is poor, thickness and quality is not uniform;The other is made of solid metal sheets.This type of gasket is used in enhanced engines and in cars and racing cars.The gasket has a certain height of relief around the cylinder holes, water holes and oil holes that need to be sealed.In addition, the center with woven steel mesh or perforated steel plate for the skeleton on both sides with asbestos and rubber binder pressed cylinder head liner.
