Skip to main content
logo

Request Quote

Contact

Chemical Compatibility

Hydraulic Oils, Synthetic Base Compatibility with O-Ring Materials

See how Nitrile, Viton (FKM), EPDM, FFKM, silicone and other seal materials rate against Hydraulic Oils, Synthetic Base, with an A–D chemical resistance scale.

Back to Chemical Compatibility Checker
MaterialCodeTrade NamesRating
Nitrile (Buna-N)NBRBuna-N, HycarB
Hydrogenated NitrileHNBRTherban, ZetpolB
Fluorocarbon (Viton)FKMViton, FluorelC
PerfluoroelastomerFFKMKalrez, ChemrazA
Ethylene PropyleneEPDMNordel, VistalonD
SiliconeVMQSilastic, ElastosilX
FluorosiliconeFVMQFluorosilicone LS, Silastic FSRB
Neoprene (Chloroprene)CRNeoprene, BayprenD
Natural RubberNRNR, Isoprene (IR)D
Styrene ButadieneSBRBuna-S, GR-SD
ButylIIRButyl, Exxon ButylD
PolyurethaneAUAdiprene, VibrathaneC
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 Hydraulic Oils, Synthetic Base

The table above rates every common O-ring elastomer for service in Hydraulic Oils, Synthetic Base 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 Hydraulic Oils, Synthetic Base, the strongest candidates are Nitrile (Buna-N), Hydrogenated Nitrile, Perfluoroelastomer, Fluorosilicone. 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.