Polytetrafluoroethylene is made of suspension polymerized polytetrafluoroethylene resin extruded by plunger. Polytetrafluoroethylene has the best chemical resistance and dielectric properties in known plastics. Polytetrafluoroethylene (polytetrafluoroethylene) is a good dynamic sealing material. It is made from a expanded poly (four vinyl chloride) strip. It has low friction coefficient, wear resistance, chemical corrosion resistance, good sealing, no hydrolysis, and constant hard. The gasket seals and lubricating materials used in various media, as well as electrical insulation, capacitor medium, wire insulation, electrical instrument insulation and so on at various frequencies.

Polytetrafluoroethylene made of rods, pipes, films, bearings, gaskets, valves and other special-shaped materials and parts, widely used in machinery, chemical industry, aviation, electrical electronics, national defense industry, advanced technology, medical and health and electrical insulation.