1.material:virgin,recycled 2.carbon, graphite,glasss,etc can be add SpecificationsWe can supply enhanced PTFE Filling product such as cylinder, washer, sealing ring. -chemcial-resistantCharacteristic of PTFE FILLING PRODUCTEnhanced PTFE product has strong corrosion-resistance and friction-resistance. By adding filler such as glass fiber, carbon fiber, copper powder, graphite, asbestos, MOS2, ...