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ptfe gasket envelope ptfe gasket sheet The operating temperature of Virgin PTFE (PTFE with no fillers) ranges from -75⁰C to +260⁰C. It is the best known non-stick material with a coefficient friction comparable to wet ice on wet ice. Most people commonly utilise PTFE by using a commonly seen trademark: which is a PTFE coating for non-stick household items. Other products you may also interested: 1. expanded ptfe products 2.Ptfe seal 3.Ptfe gasket 4.Eptfe product 5.PTFE Sheet