Material quick reference
| Material | Max service temp | Key properties | Typical applications |
|---|---|---|---|
| PEEK | ~250°C | High strength, chemical & wear resistance, hydrolytic stability | Semiconductor carriers, bearings, medical, aerospace |
| PI (Polyimide) | ~300°C | Ultra-high temp, low outgassing, dimensional stability | Semiconductor, aerospace friction/wear parts |
| PVDF | ~150°C | Chemical resistance, purity, weldability | Chemical, semiconductor & PV wet-process parts |
| PFA | ~260°C | High-purity, broad chemical resistance, translucency | High-purity tubing, linings, labware |
| FEP | ~200°C | Excellent dielectric, chemical resistance, transparency | Wire insulation, linings, release parts |
| PTFE | ~260°C | Lowest friction, broadest chemical resistance | Seals, gaskets, linings, non-stick |
How to choose
Start from service temperature and chemical environment, then consider friction/wear, purity and mechanical load. For structural load use reinforced PEEK/PI; for chemical/wet duty use PVDF/PFA/PTFE; for friction pairs use wear-modified grades. We support parallel domestic-alternative selection for imported grades.
Frequently asked questions
Which plastic for the highest temperature?
PI (~300°C) and PEEK (~250°C) lead among these; PFA/PTFE reach ~260°C but with different mechanical limits.
Which fluoropolymer for chemical duty?
PVDF, PFA and PTFE cover most chemical/wet duty; PTFE has the broadest chemical resistance, PVDF adds weldability and purity for high-purity loops.
Do you offer domestic alternatives to imported grades?
Yes — we provide parallel domestic-alternative selection and grade cross-reference for imported grades.
How do I pick between PEEK and PI?
Pick PEEK for broader chemical resistance and easier machining; pick PI when temperature, low outgassing and dimensional stability dominate.