The fluoropolymer family gathered under the general “Teflon” umbrella includes several distinct materials, each with its own properties. Choosing the right fluoropolymer is critical to how well a coating performs in a given application.
PTFE (Polytetrafluoroethylene)
The most widely used fluoropolymer. Known for high temperature resistance and a very low coefficient of friction, PTFE is typically applied by spraying and is generally rated for continuous use up to about 260°C.
PFA (Perfluoroalkoxy)
PFA shares properties similar to PTFE, but because it is melt-processable, it can be applied to more complex geometries and in thinner, more uniform layers. Its continuous-use temperature rating is also around 260°C, comparable to PTFE.
FEP (Fluorinated Ethylene Propylene)
FEP has a somewhat lower temperature rating — typically around 200-205°C for continuous service — but stands out for its transparency and flexibility, making it a common choice for specialty cable and film applications.
Quick Comparison
- PTFE: ~260°C max continuous use, lowest friction, sprayed application, most economical
- PFA: ~260°C max continuous use, melt-processable, best for complex/thin geometries
- FEP: ~200-205°C max continuous use, transparent and flexible, ideal for cable/film use
