Due to the continuous expansion of the application field of plate heat exchangers, there are different requirements for temperature resistance, pressure resistance and corrosion resistance for different media and processes. It is obviously impossible to use a "universal" gasket to adapt to all situations, but different materials should be used for different situations. The commonly used gasket cross-sectional shape is a six-sided row. Commonly used gasket types include natural rubber, neoprene rubber, EPDM, silicone rubber, fluororubber, and asbestos fiber board. The gasket of the plate heat exchanger should be replaced in time if leakage, breakage, aging and other phenomena occur during use.

Replacement should be performed in the following order

① Remove the used gasket. Note that during disassembly, there must be no scratches in the gasket groove.

② Use acetone, methyl ethyl ketone or other ketone solvents to remove the residual glue in the gasket groove.

③ Clean the gasket groove and gasket with a clean cloth or cotton yarn.

④ Apply the adhesive evenly to the gasket groove.

⑤ Put a clean new gasket on the board.

⑥ The plate with the gasket attached should be placed in a flat, cool and ventilated place and dried naturally before installation.