Compatibility Rating
Why is PVC Flexible resistant to Seawater?
PVC Flexible shows excellent resistance to Seawater due to similar chemistry to rigid PVC but with plasticizers that can be extracted by some solvents.
⚠️ When NOT to use PVC Flexible
Avoid using PVC (Flexible/Plasticized) with the same solvents as rigid PVC, plus any chemical that extracts plasticizers. Generally less resistant than rigid PVC.
Comparison Table — All Materials for Seawater
| 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 | A |
| Viton (FPM) | A | A |
| NBR | A | A |
| Silicone | NR | NR |
| SS 316 | A | NR |
| SS 304 | A | NR |
| Aluminium | C | D |
| PVC Rigid | A | C |
| PVC Flexible | A | C |
| PMP | NR | NR |
| Polystyrene | A | A |
| SAN | A | A |
| Polycarbonate | A | A |
| PETG | A | A |
| Acetal (POM) | A | A |
| Nylon (PA) | A | NR |
| Polysulfone | NR | NR |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Performance degrades significantly at higher temperatures — rated Excellent at 20°C but only Fair at 50°C. For elevated temperatures, consider a more resistant material. Max service temp: 50°C.
🔄 Better Alternative?
Consider: PVC Rigid or EPDM. View all materials for Seawater →
FAQ
Is PVC Flexible resistant to Seawater?
PVC Flexible has Excellent (A) resistance to Seawater at 20°C. Excellent resistance - recommended for continuous use.
Can I store Seawater in PVC Flexible containers?
Yes, PVC Flexible is rated A (Excellent) for Seawater.