PTFE Coated Fasteners PTFE is a synthetic fluoropolymer coating called Polytetrafluoroethylene as PTFE Coated Bolt. PTFE is a fluoropolymer, meaning it is a polymer made up of fluorine and tetrafluor. The coating provides a thin layer of fluoropolymer coating, which is outstanding, robust, and non-sticky. Compared to other fluoropolymers, PTFE Coated Fasteners are capable of