PTFE ( polytetrafluoroethylene ) is a type of plastic most commonly known as the brand name Teflon?. PTFE resins have a continuous temperature rating of 260°C (500°F). Mechanical properties begin to degrade above this point.

Both Virgin and Mechanical grades are 100% PTFE material and have similar chemical properties. These are both unfilled types of PTFE. Other types are available with fillers such as carbon, bronze, or glass to improve performace for certain applications.

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