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Technical

Chemical resistance of seal materials

How do NBR, EPDM, FKM and other elastomers behave with over 500 media?

How do common elastomers behave with the medium? Enter a medium or jump via the alphabet. The seals available for FLEXQ couplings are highlighted.

A no to slight change B slight to moderate change C moderate to severe change D not recommended – no data
MediumNREPDMNBRHNBRCRAUACMVMQFVMQTFE/PFKMFFKMETP

Seal materials

AbbreviationMaterialFLEXQ code
NRNatural rubber–
EPDMEthylene propylene diene rubberE
NBRNitrile rubberN (standard)
HNBRHydrogenated nitrile rubber–
CRChloroprene rubber–
AUPolyurethane–
ACMAcrylate rubber–
VMQSilicone–
FVMQFluorosilicone–
TFE/PTetrafluoroethylene propylene–
FKMFluororubber (Viton®)V
FFKMPerfluororubber (Kalrez®)W
ETPFluoroelastomer, chemical-resistant–

Guide values at room temperature. Behaviour depends on concentration, temperature, pressure and duration of use and must be checked in each individual case. The information is non-binding – please contact us for critical media.

Viton® is a registered trademark of The Chemours Company, Kalrez® a registered trademark of DuPont. The brand names are only used to explain the material.

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