PTFE is fluoropolymer possessing a unique combination of frictional, chemical, thermal, and electrical properties. It has non-stick nature, non wetting and is self-lubricating. It has outstanding chemicals resistance and is unaffected by all known chemicals except alkali metals, fluorine under certain conditions. It has excellent weather resistance. PTFE has the widest working temperature range, the best of the solid dielectrics an excellent insulator.