Material: Polytetrafluoroethylene is a polymer compound formed by polymerization of tetrafluoroethylene. PTFE washer has excellent sealing, high lubricating Insulation and good aging resistance. Used as engineering plastics. PTFE washers can be made into PTFE pipes, rods, belts, plates, films, etc. PTFE Washer is generally used in pipelines, containers, pumps, valves, and radar, high-frequency communication equipment.