Chemical Compatibility
Hydrogen Gas, Hot vs 13 elastomers
Best choices for Hydrogen Gas, Hot: NBR, HNBR, FKM, FFKM, EPDM, CR, IIR, AU. Full ratings below, A is continuous-service suitable, D is not recommended.
Hydrogen Gas, Hot
NBR, HNBR, FKMBest choices
—Avoid
| Elastomer | Rating | Meaning |
|---|---|---|
| NBR Nitrile (Buna-N) | A | Excellent, continuous service |
| HNBR Hydrogenated Nitrile | A | Excellent, continuous service |
| FKM Fluorocarbon (Viton) | A | Excellent, continuous service |
| FFKM Perfluoroelastomer | A | Excellent, continuous service |
| EPDM Ethylene Propylene | A | Excellent, continuous service |
| VMQ Silicone | C | Conditional, test first |
| FVMQ Fluorosilicone | C | Conditional, test first |
| CR Neoprene (Chloroprene) | A | Excellent, continuous service |
| NR Natural Rubber | B | Good, minor effect |
| SBR Styrene Butadiene | B | Good, minor effect |
| IIR Butyl | A | Excellent, continuous service |
| AU Polyurethane | A | Excellent, continuous service |
| FEPM Aflas (TFE/P) | X |
Room-temperature, neat chemical unless stated. Concentration and temperature shift ratings, validate with our lab.
Ratings are for the neat chemical at room temperature unless stated; concentration and temperature change everything. Validate with our lab before committing a compound. Search another chemical → More chemicals starting with H →
Sealing against Hydrogen Gas, Hot?
Tell us concentration, temperature and duty, we will recommend and sample the compound.