Polytetrafluoroethylene, also known as PTFE and Teflon, is a widely used plastic that was discovered in 1938 by the company Chemours. It has one of the highest melting points out of any plastic, 620°F (327°C), but it maintains its strength at temperatures as low as -450°F (-268°C).

What type of plastic can withstand high heat?

Polybenzimidazole (PBI) Polybenzimidazole (PBI) has the highest heat and wear resistance, strength, and mechanical property stability of any engineering thermoplastic on the market today. PBI fibers have no known melting point, don't burn, and don't stick to other plastics.

What is a heat resistant plastic?

Heat resistant plastics are polymeric materials that are engineered to withstand continuous operating temperatures up to and exceeding 300° F without any negative effect on their mechanical properties.