Chemical Resistance Guide
For more details about chemical resistance, please check our Rubber Chemical Resistance Guide.
FEPM
FEPM rubber, also recognized by the designation TFE/P or by brand names such as Aflas® (from Asahi) and Viton Extreme (by Chemours), is a copolymer consisting of tetrafluoroethylene and propylene. It features a fluorine content of around 54%.
FEPM is often preferred over FKM in steam and amine applications as it does not contain the VF2 monomer, the point of chemical attack. Viton® Extreme® offers superior ketone resistance than standard FKMs.
In some respects, FEPM exhibits media compatibility properties similar to EPDM and FKM. The compression set resistance at high temperatures is inferior to standard FKM.
Strengths & Limitations
Temperature Resistance
- Low temperatures around -5°C (up to -20°C for special types)
- High temperatures up to +204°C
Chemical & Aging Resistance
Strengths
- Resilient against oil-based fluids, including gasoline, petroleum, and kerosene
- Effective resistance to mineral oils, fats, and greases
- Durable when faced with vegetable oils, fats, and greases
- Withstands hot water and steam up to 170°C
- Resistant to sour gas (utilized in the oil and gas industry)
Limitations
- Less effective against aromatic oils at low temperatures
- Not optimal with ASTM oil No. 3, and has issues with No. 2 & 4
Material Comparison
- FEPM boasts superior resistance to high temperatures
- NBR offers better resistance at low temperatures
- FEPM has a broader spectrum of chemical resistance
- FEPM is resistant to steam
- FEPM is steam resistant
- FEPM displays better amine resistance
- FEPM exhibits greater resistance to steam
- FEPM has enhanced resistance to higher temperatures
- FEPM provides broader chemical resistance
- HNBR features a lower polymer cost
FEPM Compound Overview
Custom Engineered Solutions
To guarantee the best quality for custom products, we work with Six Sigma engineering methods, Finite Element Analysis (FEA) simulations and special development processes.
Standard Products
General contact ERIKS Group Head Office
Post address
ERIKS NV
P.O. Box 19108
3501 DC Utrecht
The Netherlands
E info@eriks.com
Chamber of Commerce
37 01 32 89
VAT Number
NL003.076.490.B02
