Generally, PTFE is a tough, flexible, non-resilient material of average tensile strength but with great thermal properties and excellent resistance to chemicals and passage of electric current. The coefficient of friction is unusually low and believed to be lower than any other solids. PTFE is an outstanding insulator over a wide range of temperatures and frequency. The volume resistivity is above 1018 (Ω.m) with power factor very negligible over a huge range of temperatures. The chemical resistance of PTFE is outstanding, there are no solvents which could dissolve PTFE at room temperature and the surface of PTFE at room temperature is affected only by molten alkali and fluorine in some cases.
