... .Non abrasion 4.Long service life 5.creep resistance PTFE washers:PTFE Washer is composed of flat gaskets, V-shaped gasket ... , piston rings, ball washers, etc,which used PTFE rods, tubes, plates made by mechanical ... corrosion resistance and dielectric, non-stick , in the absence of load condition can be -180 to +260 temperature, always use in ...