Compatibility Rating
Why is PTFE resistant to Calcium Oxide?
PTFE shows excellent resistance to Calcium Oxide 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 Calcium Oxide
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | NR |
| 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 | A | NR |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | C | C |
| PVC Rigid | A | NR |
| PVC Flexible | A | NR |
| PMP | NR | NR |
| Polystyrene | A | A |
| SAN | A | A |
| Polycarbonate | B | B |
| PETG | B | B |
| Acetal (POM) | NR | NR |
| Nylon (PA) | B | B |
| Polysulfone | NR | 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 260°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: None — PTFE is the gold standard. View all materials for Calcium Oxide →
FAQ
Is PTFE resistant to Calcium Oxide?
PTFE has Excellent (A) resistance to Calcium Oxide at 20°C. Excellent resistance - recommended for continuous use.
Can I store Calcium Oxide in PTFE containers?
Yes, PTFE is rated A (Excellent) for Calcium Oxide.