The plate heat exchanger gasket is one of the important components of the plate heat exchanger, a ring made of a material that can produce plastic deformation and has a certain strength. Most of the gaskets are cut from non-metallic plates or made by professional factories according to the specified size. The materials are asbestos rubber plates, asbestos plates, polyethylene plates, etc.; thin metal plates (white iron, stainless steel) are also used to remove asbestos A metal-wrapped gasket made of non-metallic materials; there is also a spiral wound gasket made of thin steel tape and asbestos tape.
Ordinary rubber gaskets are suitable for occasions where the temperature is lower than 120℃; asbestos rubber gaskets are suitable for occasions where the temperature of water vapor is lower than 450℃, the temperature of oil is lower than 350℃, and the pressure is lower than 5MPa. It is generally corrosive The most commonly used medium is acid-resistant asbestos board. In high-pressure equipment and pipelines, metal gaskets of lens type or other shapes made of copper, aluminum, 10# steel, and stainless steel are used. The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish of the sealing surface and the gasket is relatively high.
