Chemical Compatibility
Phosphoric Acid, Concentrated vs 13 elastomers
Best choices for Phosphoric Acid, Concentrated: FKM, FFKM, EPDM, IIR. Full ratings below, A is continuous-service suitable, D is not recommended.
Phosphoric Acid, Concentrated
FKM, FFKM, EPDMBest choices
NBR, HNBR, VMQAvoid
| Elastomer | Rating | Meaning |
|---|---|---|
| NBR Nitrile (Buna-N) | D | Not recommended |
| HNBR Hydrogenated Nitrile | D | Not recommended |
| FKM Fluorocarbon (Viton) | A | Excellent, continuous service |
| FFKM Perfluoroelastomer | A | Excellent, continuous service |
| EPDM Ethylene Propylene | A | Excellent, continuous service |
| VMQ Silicone | D | Not recommended |
| FVMQ Fluorosilicone | C | Conditional, test first |
| CR Neoprene (Chloroprene) | C | Conditional, test first |
| NR Natural Rubber | X | |
| SBR Styrene Butadiene | B | Good, minor effect |
| IIR Butyl | A | Excellent, continuous service |
| AU Polyurethane | D | Not recommended |
| 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 P →
Sealing against Phosphoric Acid, Concentrated?
Tell us concentration, temperature and duty, we will recommend and sample the compound.