Polytetrafluoroethylene has many excellent functions. Such as low friction coefficient, non stick surface characteristics, wide operating temperature range of -180 ℃~+260 ℃, excellent aging resistance and chemical corrosion resistance. The PTFE raw material tape is made of 100% PTFE as raw material, which has a network like expanded structure composed of fine long fibers and segments. Polytetrafluoroethylene raw material tape has the characteristics of good toughness, high longitudinal strength, and easy deformation in the transverse direction. It is an ideal material for sealing on gaskets and threads. But it cannot be used in situations where it comes into contact with high concentrations of oxygen or liquid oxygen. Polytetrafluoroethylene raw tape is mainly used for packing and sealing threaded ports. Widely applicable, suitable for sealing pipeline threads and valve interfaces with strong oxidants, strong acids, strong alkalis, oxygen, coal gas, high-temperature steam, and various chemically aggressive media. Polytetrafluoroethylene raw material tape is a commonly used auxiliary product in plumbing installation, used at pipe fittings connections to enhance the sealing of pipeline connections.