The given compound \( F_2C = CF_2 \) is a monomer unit of Teflon (polytetrafluoroethylene, PTFE), which is a polymer made by polymerizing tetrafluoroethylene. Teflon is known for its non-stick properties and its high chemical resistance. Nylon-6 is a different polymer, and Buna-S is a type of synthetic rubber, while Glyptol is a type of synthetic resin.