What is Cylinder Head Gasket?

Cylinder Head Gasket, also known as cylinder gasket, is located between the cylinder head and the cylinder block. Its function is to fill the microscopic pores between the cylinder block and the cylinder head to ensure good sealing at the joint surface, thereby ensuring the sealing of the combustion chamber. Prevent air leakage from the cylinder and water leakage from the water jacket. According to different materials, cylinder gaskets can be divided into metal-asbestos gaskets, metal-composite gaskets and all-metal gaskets.

The cylinder head gasket is the seal between the top surface of the body and the bottom surface of the cylinder head. Its function is to keep the cylinder seal from leaking air, and to keep the coolant and oil flowing from the body to the cylinder head from leaking. The cylinder head gasket is subjected to the pressure caused by tightening the cylinder head bolts, and is subject to the high temperature and high pressure of the combustion gas in the cylinder, as well as the corrosion of the oil and coolant.

The cylinder head gasket should have sufficient strength and be resistant to pressure, heat and corrosion. In addition, a certain elasticity is required to compensate for the roughness and unevenness of the top surface of the body and the bottom surface of the cylinder head, as well as the deformation of the cylinder head due to the gas force when the engine is working.