Compatibility Rating
Why is PTFE resistant to Ethylene Glycol?
PTFE shows excellent resistance to Ethylene Glycol due to the extremely strong carbon-fluorine bonds making it virtually inert to almost all chemicals.
⚠️ When NOT to use PTFE
Avoid using PTFE (Teflon) with molten alkali metals, fluorine gas at high temperatures, and certain fluorinated compounds. It is the most chemically resistant plastic available.
Comparison Table — All Materials for Ethylene Glycol
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PTFE | A | A |
| PVDF | B | B |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | A | NR |
| Viton (FPM) | A | NR |
| NBR | C | NR |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A |
| PVC Rigid | C | D |
| PVC Flexible | NR | NR |
| PMP | A | A |
| Polystyrene | B | B |
| SAN | A | A |
| Polycarbonate | B | C |
| PETG | NR | NR |
| Acetal (POM) | B | B |
| Nylon (PA) | C | NR |
| Polysulfone | B | B |
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 260°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: None — PTFE is the gold standard. View all materials for Ethylene Glycol →
FAQ
Is PTFE resistant to Ethylene Glycol?
PTFE has Excellent (A) resistance to Ethylene Glycol at 20°C. Excellent resistance - recommended for continuous use.
Can I store Ethylene Glycol in PTFE containers?
Yes, PTFE is rated A (Excellent) for Ethylene Glycol.