Fluorinated Ethylene Propylene (FEP)
Resists highly corrosive processes
- Essentially a melt-process version of Polytetrafluoroethylene (PTFE)
- More transparent than PTFE
- Better gas and vapor permeability properties than PTFE
- Maximum operating temperature +204 °C / +400 °F
- Melting point +260 °C / +500 °F
- Can be sterilized with EtO, gamma radiation, an autoclave and electron beam
- Can be extruded or used as a coating
Labware and tubing where highly corrosive processes are used.
Tubing and coatings
Fluorinated Ethylene Propylene (FEP) is a copolymer of hexafluropropylene and tetrafluroethylene and differs from PTFE in that it is melt-processable using injection molding and screw extrusion techniques. Providing low friction, it is inert to most chemicals and is also highly transparent and resistant to sunlight. FEP is slightly more flexible than PTFE but has higher friction and lower tensile strength.