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Chemical Compatibility

Hydraulic Fluids, Hydraulic Oils Din 51524 Compatibility with O-Ring Materials

See how Nitrile, Viton (FKM), EPDM, FFKM, silicone and other seal materials rate against Hydraulic Fluids, Hydraulic Oils Din 51524, 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, FluorelA
PerfluoroelastomerFFKMKalrez, ChemrazA
Ethylene PropyleneEPDMNordel, VistalonD
SiliconeVMQSilastic, ElastosilB
FluorosiliconeFVMQFluorosilicone LS, Silastic FSRA
Neoprene (Chloroprene)CRNeoprene, BayprenB
Natural RubberNRNR, Isoprene (IR)D
Styrene ButadieneSBRBuna-S, GR-SD
ButylIIRButyl, Exxon ButylD
PolyurethaneAUAdiprene, VibrathaneA
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 Fluids, Hydraulic Oils Din 51524

The table above rates every common O-ring elastomer for service in Hydraulic Fluids, Hydraulic Oils Din 51524 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 Fluids, Hydraulic Oils Din 51524, the strongest candidates are Nitrile (Buna-N), Hydrogenated Nitrile, Fluorocarbon (Viton), Perfluoroelastomer, Silicone, Fluorosilicone, Neoprene (Chloroprene), Polyurethane. 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.