Plate heat exchanger gaskets are extremely critical components of detachable plate heat exchangers. The application range of plate heat exchangers is also largely limited by gaskets.The plate heat exchanger rubber gasket is sandwiched between the two metal plates and is a static seal, but it is different from the general static seal. Because the temperature and pressure at the inlet of the heat exchanger are generally greater than the temperature and pressure at the outlet.When the heat exchanger is used, the temperature and pressure of the gasket are higher. As the running time is extended, the temperature is lowered and the pressure is reduced. The gasket expands when the temperature is high, and shrinks when the temperature is low.Therefore, the rubber seal is required to have good elasticity, that is, good compression deformation performance and heat resistance in order to achieve good use.