Compatibility Rating
At 20°C (68°F)
Fair
Limited resistance - short-term exposure only
At 50°C (122°F)
Poor
Not recommended - significant degradation expected
Why is NBR rated this way to Isobutanol?
NBR has limited resistance to Isobutanol. Short-term exposure may be acceptable, but prolonged contact is not recommended.
⚠️ When NOT to use NBR
Avoid using Nitrile Rubber (Buna-N) with strong oxidizers, ketones, chlorinated solvents, and ozone. Not suitable for polar solvents.
Comparison Table — All Materials for Isobutanol
| 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 | NR |
| NBR | C | D |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | NR |
| PVC Rigid | A | B |
| PVC Flexible | NR | NR |
| PMP | A | B |
| Polystyrene | B | B |
| SAN | C | D |
| Polycarbonate | A | B |
| PETG | B | B |
| Acetal (POM) | A | NR |
| Nylon (PA) | B | B |
| Polysulfone | A | B |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
FAQ
Is NBR resistant to Isobutanol?
NBR has Fair (C) resistance to Isobutanol at 20°C. Limited resistance - short-term exposure only.
Can I store Isobutanol in NBR containers?
Use caution - NBR is rated C (Fair) for Isobutanol.