Fluoropolymer Selection for Chemical Processing
Select PFA, PTFE, FEP, ETFE or PVDF for chemical processing by comparing medium, temperature, pressure, purity, fabrication route and component geometry. Always validate the final material against the process medium and operating conditions.
Fluoropolymer selection matrix
| Material | Strength | Typical components | Reference temperature range | Processing |
|---|---|---|---|---|
| PFA | High purity, chemical resistance, melt processability | Tubing, valves, linings | -200 to +260 °C | Extrusion, injection moulding |
| PTFE | Broad chemical resistance, high service temperature | Gaskets, seals, lined equipment | Up to +260 °C | Compression moulding, paste extrusion |
| FEP | Transparency and melt processability | Flexible tubing, cable insulation | Up to +205 °C | Extrusion |
| ETFE | Mechanical robustness | Wire/cable, industrial linings | Up to +150 °C | Extrusion |
| PVDF | Cost-performance for selected chemicals | Piping, tanks, pumps | Confirm by grade and medium | Extrusion, injection moulding |
Selection workflow
- Define medium, concentration, temperature, pressure and contamination limits.
- Choose compatible material families.
- Confirm grade, construction and qualification documentation.
Frequently asked questions
Which fluoropolymer is best for acid service?
The answer depends on the acid, concentration, temperature, pressure and component design. Confirm compatibility for the final operating conditions.
Can Convena recommend a grade?
Yes. Provide the operating conditions, component design and documentation requirements for a grade-level discussion.
