Which O-ring material is best for Ethanethiol?

Materials rated Excellent or Good for Ethanethiol include Fluorocarbon (Viton), Perfluoroelastomer. Confirm the final choice against your operating temperature and concentration.

Are these Ethanethiol compatibility ratings guaranteed?

No. Ratings are guideline values at ambient temperature (~20°C) and are not a warranty. Compatibility with Ethanethiol varies with temperature, concentration, pressure and exposure time — always validate for your application.

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Chemical Compatibility

Ethanethiol Compatibility with O-Ring Materials

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

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Material	Code	Trade Names	Rating
Nitrile (Buna-N)	NBR	Buna-N, Hycar	DNot Recommended
Hydrogenated Nitrile	HNBR	Therban, Zetpol	XInsufficient Data
Fluorocarbon (Viton)	FKM	Viton, Fluorel	BGood
Perfluoroelastomer	FFKM	Kalrez, Chemraz	AExcellent
Ethylene Propylene	EPDM	Nordel, Vistalon	CFair
Silicone	VMQ	Silastic, Elastosil	CFair
Fluorosilicone	FVMQ	Fluorosilicone LS, Silastic FSR	XInsufficient Data
Neoprene (Chloroprene)	CR	Neoprene, Baypren	XInsufficient Data
Natural Rubber	NR	NR, Isoprene (IR)	XInsufficient Data
Styrene Butadiene	SBR	Buna-S, GR-S	XInsufficient Data
Butyl	IIR	Butyl, Exxon Butyl	XInsufficient Data
Polyurethane	AU	Adiprene, Vibrathane	XInsufficient Data
Aflas (TFE/P)	FEPM	Aflas, FEPM	XInsufficient Data

AExcellentBGoodCFairDNot RecommendedXInsufficient Data

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 Ethanethiol

The table above rates every common O-ring elastomer for service in Ethanethiol 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 Ethanethiol, the strongest candidates are Fluorocarbon (Viton), Perfluoroelastomer. 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.

Ethanethiol Compatibility with O-Ring Materials

Choosing a seal material for Ethanethiol

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