Compatibility Rating
At 20°C
Good
Good resistance - suitable for intermittent contact
At 50°C
Good
Good resistance - suitable for intermittent contact
Why is FEP resistant to Pyridine?
FEP shows good resistance to Pyridine due to its fully fluorinated structure similar to PTFE, offering near-universal chemical resistance.
⚠️ When NOT to use FEP
Avoid using FEP (Fluorinated Ethylene Propylene) with molten alkali metals and fluorine gas. Suitable up to 200°C.
Comparison Table — All Materials for Pyridine
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | C |
| LDPE | NR | NR |
| PP | C | C |
| PTFE | A | A |
| PVDF | A | C |
| FEP | B | B |
| ECTFE/ETFE | A | A |
| EPDM | D | D |
| Viton (FPM) | D | D |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A |
| PVC Rigid | D | D |
| PVC Flexible | D | D |
| PMP | NR | NR |
| Polystyrene | D | D |
| SAN | D | D |
| Polycarbonate | D | D |
| PETG | NR | NR |
| Acetal (POM) | A | A |
| Nylon (PA) | A | NR |
| Polysulfone | D | D |
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 200°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PTFE for higher temps. View all materials for Pyridine →
FAQ
Is FEP resistant to Pyridine?
FEP has Good (B) resistance to Pyridine at 20°C.
Can I store Pyridine in FEP?
Yes, FEP is rated B for Pyridine.