What plastic can withstand high temperatures?

Online Answer
Polytetrafluoroethylene (PTFE)Polytetrafluoroethylene (PTFE) PTFE is unique because it's almost completely chemically inert and highly insoluble in most solvents, making it ideal for high-temperature applications. PTFE has one of the highest melting points of any thermoplastic at 327°C, and a very large operating temperature range..
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PTFE coating is a fluorocarbon solid, making it resistant to corrosive chemicals and extreme temperatures for both hot and cold, UV ray resistant, and low friction. It also provides good insulation from electricity and doesn't absorb water. Its legacy in industrial applications spans over 80 years..