FEP

FEP is very similar in composition to the fluoropolymers PTFE and PFA. FEP and PFA both share PTFE’s useful properties of low friction and non-reactivity, but are more easily formable. FEP is softer than PTFE and melts at 500°F (260 °C); it is highly transparent and resistant to sunlight.  In terms of corrosion resistance, FEP is the only other readily available fluoropolymer that can match PTFE’s own resistance to caustic agents, as it is a pure carbon-fluorine structure and fully fluorinated.  A noteworthy property of FEP is that it is vastly superior to PTFE in some coating applications involving exposure to detergents.

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