Chemical Compatibility
Fermentation Gas vs 13 elastomers
Best choices for Fermentation Gas: NBR, HNBR, FKM, FFKM, VMQ, CR. Full ratings below, A is continuous-service suitable, D is not recommended.
Fermentation Gas
NBR, HNBR, FKMBest choices
FVMQ, NR, SBRAvoid
| 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 | X | |
| VMQ Silicone | A | Excellent, continuous service |
| FVMQ Fluorosilicone | D | Not recommended |
| CR Neoprene (Chloroprene) | A | Excellent, continuous service |
| NR Natural Rubber | D | Not recommended |
| SBR Styrene Butadiene | D | Not recommended |
| IIR Butyl | X | |
| AU Polyurethane | B | Good, minor effect |
| 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 F →
Sealing against Fermentation Gas?
Tell us concentration, temperature and duty, we will recommend and sample the compound.