... PTFE Filling product such as cylinder, washer, sealing ring. -chemcial-resistantCharacteristic of PTFE FILLING PRODUCTEnhanced PTFE product ... for the production of washer, valve, bearing, slide, piston ring, insulating sleeve, and self-lubricating seal. Product specification We ... enhanced PTFE product such as cylinder, washer, sealing ring. Special product such as irregular shaped parts can be ...