What is PTFE?

Polytetrafluoroethylene (PTFE), also known as Teflon, is a synthetic fluoropolymer of tetrafluoroethylene. It is hydrophobic, non-wetting, and has one of the lowest coefficients of friction of any solid. PTFE is commonly used in non-stick cookware, as a sealant in plumbing (thread seal tape), and as insulation in electrical applications due to its excellent dielectric properties and high melting point.