Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The best-known brand of PTFE-based formulas is Teflon. This is made by Chemours, a 2015 spin-off of DuPont Co., which discovered the compound in 1938.
PTFE has one of the lowest coefficients of friction of any solid, leading to its wide use as a non-stick coating, for example for pans and other cookware. It is non-reactive, partly because of the strength of its carbon–fluorine bonds, so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PTFE reduces friction, wear, and the energy consumption of machinery.