Fluorinated ethylene propylene, or FEP, is slightly different to PTFE, though it still has some of the same non-stick qualities of Teflon. Overall, FEP is softer than PTFE and melts at a lower temperature. Due to this, the use of FEP for cookware and bakeware A further benefit of FEP is that it’s entirely transparent. This means that whatever it surface it covers will remain the same colour. FEP is resistant to sunlight, so it is good for all weather applications. This is especially useful for outdoor wiring and equipment that is subjected to weathering.