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Chemical Compatibility

Fc C318 (octafluoro0tetraethylene) Compatibility with O-Ring Materials

See how Nitrile, Viton (FKM), EPDM, FFKM, silicone and other seal materials rate against Fc C318 (octafluoro0tetraethylene), with an A–D chemical resistance scale.

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MaterialCodeTrade NamesRating
Nitrile (Buna-N)NBRBuna-N, HycarA
Hydrogenated NitrileHNBRTherban, ZetpolA
Fluorocarbon (Viton)FKMViton, FluorelB
PerfluoroelastomerFFKMKalrez, ChemrazB
Ethylene PropyleneEPDMNordel, VistalonA
SiliconeVMQSilastic, ElastosilX
FluorosiliconeFVMQFluorosilicone LS, Silastic FSRX
Neoprene (Chloroprene)CRNeoprene, BayprenA
Natural RubberNRNR, Isoprene (IR)A
Styrene ButadieneSBRBuna-S, GR-SA
ButylIIRButyl, Exxon ButylA
PolyurethaneAUAdiprene, VibrathaneX
Aflas (TFE/P)FEPMAflas, FEPMD
ABCDX

Guideline only. Values and ratings are representative at ambient conditions and are not a warranty of performance. Actual results vary with temperature, pressure, concentration and exposure time. Validate for your specific application — our engineers can help.

Choosing a seal material for Fc C318 (octafluoro0tetraethylene)

The table above rates every common O-ring elastomer for service in Fc C318 (octafluoro0tetraethylene) on an A–D scale. A is Excellent, B is Good, C is Fair (test before relying on it), and D is Not Recommended. An X indicates insufficient published data.

For Fc C318 (octafluoro0tetraethylene), the strongest candidates are Nitrile (Buna-N), Hydrogenated Nitrile, Fluorocarbon (Viton), Perfluoroelastomer, Ethylene Propylene, Neoprene (Chloroprene), Natural Rubber, Styrene Butadiene, Butyl. These ratings are representative at ambient conditions (~20°C). Compatibility shifts with temperature, concentration, pressure and exposure time, so always validate the material against your real operating envelope before committing to a design.