“Teflon” polytetrafluoroethylene resin as an electrical insulator

“Teflon” is the du Pont trade name for the polymer made from tetrafluorethylene. The polymer has a linear chain structure of carbon atoms, to each of which is attached two fluorine atoms. It is capable of continuously withstanding operating temperatures in the range of 200 to 300°C. It is insoluble, and is attacked only by a few rarely occurring materials. Its electrical losses are low, and its volume and surface resistivities are high.