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Chemical Compatibility

Ethylene Oxide, 12% and Freon 12, 80% Compatibility with O-Ring Materials

See how Nitrile, Viton (FKM), EPDM, FFKM, silicone and other seal materials rate against Ethylene Oxide, 12% and Freon 12, 80%, with an A–D chemical resistance scale.

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MaterialCodeTrade NamesRating
Nitrile (Buna-N)NBRBuna-N, HycarC
Hydrogenated NitrileHNBRTherban, ZetpolC
Fluorocarbon (Viton)FKMViton, FluorelD
PerfluoroelastomerFFKMKalrez, ChemrazD
Ethylene PropyleneEPDMNordel, VistalonB
SiliconeVMQSilastic, ElastosilD
FluorosiliconeFVMQFluorosilicone LS, Silastic FSRD
Neoprene (Chloroprene)CRNeoprene, BayprenD
Natural RubberNRNR, Isoprene (IR)D
Styrene ButadieneSBRBuna-S, GR-SD
ButylIIRButyl, Exxon ButylB
PolyurethaneAUAdiprene, VibrathaneD
Aflas (TFE/P)FEPMAflas, FEPMX
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 Ethylene Oxide, 12% and Freon 12, 80%

The table above rates every common O-ring elastomer for service in Ethylene Oxide, 12% and Freon 12, 80% 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 Ethylene Oxide, 12% and Freon 12, 80%, the strongest candidates are Ethylene Propylene, 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.