... filling material:carbon,bronze,graphite,glassfibre,Mos2 Characteristics: PTFE filling product has strong corrosion-resistance and friction- ... fiber, carbon fiber, copper powder, graphite, asbestos, MOS2, AL2O3, carbon powder, ceramic fiber, metal powder, polyamide, PS, hardness, ... self-lubricating seal. Specifications:We can supply enhanced PTFE product such as cylinder, washer, sealing ring. ...