The ODU piston seal ring is mainly used for the sealing of the piston in the reciprocating cylinder. Scope of application: various engineering machinery and hydraulic and mechanical cylinders with harsh working conditions such as high temperature, high pressure, and stamping.FKM is a kind of highly saturated fluorine-containing polymer. Because of its excellent properties such as oil resistance, high temperature resistance, solvent resistance, strong acid resistance, strong oxidant resistance, flame retardancy, and aging resistance, FKM has been used in the defense industry, Cutting-edge technology fields such as aerospace, electronic communications, vehicles and ships, petrochemicals have been widely used. Fluorocarbon products have better high temperature resistance and resistance to many chemicals than other materials, making them the most versatile elastomer for making O-rings and other customized seals.