What is the difference between FEP, PFA, and PTFE?

PTFE has the broadest temperature range and lowest friction but is not melt-processable, so it is typically supplied as machined or skived covers. FEP is heat-shrinkable and offers excellent release at moderate temperatures. PFA combines PTFE-like high-temperature performance with melt-processability and is used where thicker, more durable heat-shrink covers are needed.

Which fluoropolymer has the highest service temperature?

PTFE and PFA both run up to roughly 500 F (260 C) in continuous service, with PFA matching PTFE on heat while remaining melt-processable. FEP is the lowest of the three, generally used up to about 400 F (205 C).

When should I specify FEP roll covers?

FEP is a strong default when the process runs at moderate temperatures and you need a heat-shrinkable cover with excellent release and chemical resistance at a lower cost than PFA.

When should I specify PFA roll covers?

PFA is the right choice when you need higher temperature capability than FEP, a thicker or more abrasion-resistant wall, or a heat-shrink construction that approaches PTFE performance.

When should I specify PTFE roll covers?

PTFE is preferred where the lowest coefficient of friction, broadest chemical resistance, and highest temperature ceiling are required, and where a machined or skived cover construction is acceptable.

How do I get help selecting a fluoropolymer for my roll?

Use the Contact page to send roll dimensions, base material, target operating temperature, and a short process description. Fluoron engineering will recommend the polymer and cover style that fit the application.

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Material selection guide for heat-shrink fluoropolymer roll covers — see the FSE template for the visible page.