Expanded PTFE Joint Sealant Expanded PTFE Joint Sealant is a kind of novel material which be adopted unique handicraft. It is a white pure ptfe product with continuous banding, it has good flexibility peculiarity, encapsulate resilience, resistant , resistant high & low temperature and excellent resistant corrosion, no aging, lubrication itself. The sealed Peculiarity excellence and install it expediency. It suitable for field of petrochemical, medicine, petrifaction, grocery, electron, nuclear power, vessel, etc.　 Technology parameter: working temperature: -268～+316°C working pressure: ＜20 Mpa suitable medium: every chemistry matter but FL and melt alkali metals. density: 0.6～0.8 g/cm3.