Plate heat exchanger is an important component of heat exchange technology in process industry equipment.The elastic gasket sealed between various plate radiators is a kind of vulnerable part, and it is also a kind of part which is easy to aging in natural conditions.Its service life has an important influence on the service life of plate heat exchanger.If these seals harden and lose their original elasticity, the heat exchanger will not work properly.The following factors have an important impact on the use of elastic gaskets:

1. Working mode of heat exchanger (continuous or discontinuous)

2. Corrosivity of Heat Dissipating Medium and Cleaner Used

3. Work temperature

4. Work pressure

5. The pressure of elastic gasket is higher because of excessive pressure and unbalanced pressure.

6. Natural aging. The softening of elastic gasket is related to pressure and temperature. When the gasket loses elasticity, the heat exchanger will leak.