Compatibility Rating
📊 Note: Potassium Hydroxide resistance varies by concentration. Data available for: 1 %, 10 %, 30 %, 50 %. Search for specific concentrations →
Why is EPDM resistant to Potassium Hydroxide?
EPDM shows excellent resistance to Potassium Hydroxide due to its saturated polymer backbone resisting degradation from water, steam, acids, and alkalis.
⚠️ When NOT to use EPDM
Avoid using EPDM Rubber with mineral oils, petroleum fuels, and aromatic solvents which cause swelling and degradation.
Comparison Table — All Materials for Potassium Hydroxide
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PTFE | A | A |
| PVDF | A | A |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | A | NR |
| Viton (FPM) | A | C |
| NBR | C | C |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | D | D |
| PVC Rigid | A | A |
| PVC Flexible | NR | NR |
| PMP | A | A |
| Polystyrene | B | B |
| SAN | NR | NR |
| Polycarbonate | C | D |
| PETG | D | D |
| Acetal (POM) | A | A |
| Nylon (PA) | A | NR |
| Polysulfone | A | A |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Good resistance at both 20°C and 50°C. Maximum service temperature for this material is 120°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: Viton for oils, PTFE for universal. View all materials for Potassium Hydroxide →
FAQ
Is EPDM resistant to Potassium Hydroxide?
EPDM has Excellent (A) resistance to Potassium Hydroxide at 20°C.
Can I store Potassium Hydroxide in EPDM?
Yes, EPDM is rated A for Potassium Hydroxide.
📊 Note: Potassium Hydroxide resistance varies by concentration. Data available for: 1 %, 10 %, 30 %, 50 %. Search for specific concentrations →