In order to ensure the sealing of the gasket under certain conditions of use, some parts have general requirements for the gasket, some require high temperature and high pressure, some require oil resistance, and others are used for dustproof, heat insulation and shock absorption. . Therefore, the gasket should be reasonably selected according to the specific conditions of use and requirements. Direct and limited selection of the specifications given by the product manual, the seals produced by the special manufacturer. For gaskets that cannot be purchased or sealed, refer to the material, performance, size and shape of the original gasket for self-selection. The types and performances of commonly used automotive water tank gaskets are as follows:

(1) Cowhide. It has a certain elasticity, heat resistance and wear resistance, and is used for heat-resistant, wear-resistant and waterproof parts. Therefore, it can be adapted to work under higher temperature conditions to produce a higher strength gasket.

(2) Cork board. It is made of granulated cork bonded with a binder. It has the characteristics of soft texture, large plasticity, good sealing, water resistance and oil resistance. It is often used to prevent water leakage and oil leakage. Pads, valve cover pads and oil pan pads.

(3) Asbestos board. It is a kind of plate made of asbestos fiber mixed with a small amount of bonding material. It has the characteristics of high temperature resistance, heat insulation and sealing, low water content and high tensile strength. It is used to prevent air, hot gas, water and oil seepage. The connection parts, such as air pump, carburetor gasket, etc.