Compatibility Rating
At 20°C (68°F)
Excellent
Excellent resistance - recommended for continuous use
At 50°C (122°F)
No Data
No data available
Why is EPDM resistant to Potassium Iodide?
EPDM shows excellent resistance to Potassium Iodide 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 Iodide
| 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 | A |
| NBR | A | C |
| Silicone | NR | NR |
| SS 316 | A | NR |
| SS 304 | A | NR |
| Aluminium | A | A |
| PVC Rigid | A | A |
| PVC Flexible | A | NR |
| PMP | NR | NR |
| Polystyrene | A | A |
| SAN | A | A |
| Polycarbonate | B | B |
| PETG | B | B |
| Acetal (POM) | A | A |
| Nylon (PA) | A | NR |
| Polysulfone | A | NR |
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 Iodide →
FAQ
Is EPDM resistant to Potassium Iodide?
EPDM has Excellent (A) resistance to Potassium Iodide at 20°C. Excellent resistance - recommended for continuous use.