Why source PTFE from a specialist
Generic resin rarely matches a duty at once: sealing needs low creep, food lines need compliant grade, and wear pairs need filled PTFE. Teresi stocks multiple PTFE families and machines to drawing, shortening lead time versus imported-only sourcing.
PTFE stock shapes we supply
Rod
Diameters from small to large; for seals, insulators and machined parts.
Sheet / Plate
For gaskets, liners and corrosion shields.
Tube / Pipe
Lined and solid-bore for corrosive fluid transfer.
Skived Film / Tape
Thin dielectric and release films, wrapping tape.
Filled Grades
Glass, carbon, bronze, graphite-filled for wear/creep duties.
Filled and modified PTFE grades
| Grade | Added property | Typical use |
|---|---|---|
| Virgin PTFE | Highest purity, dielectric | Semiconductor, food, electrical |
| Glass-filled | Higher creep resistance | Seals, structural parts |
| Carbon-filled | Wear + ESD control | Bearings, piston rings |
| Bronze-filled | Heat conduction, wear | Heavy-load bearings |
| Graphite-filled | Self-lubricating | Dry-running seals |
| Medical / Food | Compliance grade | Food, pharma contact |
PTFE versus other fluoropolymers
| Polymer | Max temp | Process | Best for |
|---|---|---|---|
| PTFE | ~260°C | Machined/sinter | Chemical, low friction |
| PFA | ~260°C | Melt-process | Lined pipe, pure fluid |
| FEP | ~200°C | Melt-process | Wire, film |
| PVDF | ~150°C | Melt-process | Pure-water, architecture |
Machining and supply
We cut, skive and CNC-machine PTFE to drawing, and provide grade selection, sample and compliance files on request.
Frequently asked questions
What is the service temperature of PTFE?
Continuous use is about -200°C to +260°C; short excursions higher. It is among the widest-range polymers.
Virgin or filled PTFE — which to choose?
Choose virgin for purity/electrical/food; choose filled grades when creep, wear or conductivity matter more than absolute purity.
Is PTFE food-contact compliant?
Food/medical grades are organized for contact duty; request the specific compliance file for your market.
Can you supply custom PTFE rod dimensions?
Yes — we stock standard sizes and machine non-standard rod, tube and parts to drawing.