Polytetrafluoroethylene (PTFE) is used wherever the chemical and thermal resistance of the elastomer O-Rings is no longer sufficient. These are primarily applications in the chemical, food, pharmaceuticals and medical industries. PTFE is used only as static seals, e.g. on flanges, covers, etc.
PTFE has the highest resistance to chemicals of all the plastics and can be used for almost any application. It has limited resistance to molten alkaline metals, to elementary fluorine and to certain halogen compounds. PTFE undergoes no changes on exposure to aging, light and ozone. The water absorption rate is less than 0.01%.
Operating Temperature: -100 to 500 °F
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