Chemical Compatibility
Ammonia Gas, Hot vs 13 elastomers
Best choices for Ammonia Gas, Hot: FFKM, VMQ. Full ratings below, A is continuous-service suitable, D is not recommended.
Ammonia Gas, Hot
FFKM, VMQBest choices
NBR, HNBR, FKMAvoid
| Elastomer | Rating | Meaning |
|---|---|---|
| NBR Nitrile (Buna-N) | D | Not recommended |
| HNBR Hydrogenated Nitrile | D | Not recommended |
| FKM Fluorocarbon (Viton) | D | Not recommended |
| FFKM Perfluoroelastomer | A | Excellent, continuous service |
| EPDM Ethylene Propylene | B | Good, minor effect |
| VMQ Silicone | A | Excellent, continuous service |
| FVMQ Fluorosilicone | D | Not recommended |
| CR Neoprene (Chloroprene) | B | Good, minor effect |
| NR Natural Rubber | D | Not recommended |
| SBR Styrene Butadiene | D | Not recommended |
| IIR Butyl | B | Good, minor effect |
| AU Polyurethane | D | Not recommended |
| FEPM Aflas (TFE/P) | B | Good, minor effect |
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 A →
Sealing against Ammonia Gas, Hot?
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