Teflon is a plastic that offers high chemical resistance, low and high temperature capability, resistance to weathering, a low coefficient of friction, and electrical and thermal insulation.
Teflon mechanical properties are low compared to other plastics, but its properties remain at a useful level over a wide temperature range of of -100°F to +500°F (-73°C to 260°C). Mechanical properties are often enhanced by adding fillers (see paragraph below). It has excellent thermal and electrical insulation properties and a low coefficient of friction. PTFE is very dense and cannot be melt processed — it must be compressed and sintered to form useful shapes.
PTFE’s mechanical properties can be enhanced by adding fillers such as glass fibers, carbon, graphite, molybdenum disulphide, and bronze. Generally, filled PTFE’s maintain their excellent chemical and high temperature characteristics, while fillers improve mechanical strength, stability, and wear resistance.
TEFLON is a registered trademark of DuPont.