Cylinder head gasket

This seal is located between the cylinder and the cylinder head. It is deformable under the pressure and prevents the hot gas pressure from leaking out of the combustion chamber.
It is resistant to very high thermal, mechanical and chemical stresses so that it is one of the essential parts for the proper functioning of the engine Top80. It is therefore important to follow the maintenance manual by regularly checking the tightness of the cylinder head.
This seal must also allow the passage of the assembly gland stud between the cylinder head and cylinder block.