Engineering plastic
PTFE / Teflon
Choose PTFE for chemical resistance, electrical insulation and extremely low friction.
01 · QUICK ANSWER
When should you choose PTFE?
Virgin PTFE suits clean chemical and electrical duty. Filled grades improve creep, wear and dimensional stability when a moving seal or bearing needs more structure.
02 · SELECTION DATA
Typical properties at a glance
Screening values only. Final design data must follow the exact grade, condition, stock form and supplier certificate.
Density2.14–2.30 g/cm³
Strength range20–35 MPa tensile
TemperatureContinuous use near 260°C
MachinabilityGood
03 · ENGINEERING NOTES
Specify what changes the result
A material name alone is not enough. Include grade, condition, finish and documentation on the drawing or purchase specification.
- Virgin PTFE
- Glass-filled PTFE
- Carbon-filled PTFE
- Bronze-filled PTFE
- Seals and gaskets
- Valve seats
- Electrical insulators
- Chemical handling parts
- Very high creep under load
- Large thermal expansion
- Tight tolerances require temperature control
- As machined
- Controlled deburr
- Chemical etch for bonding
04 · MANUFACTURING FIT
Available process routes
CNC machiningCommonly available
Sheet metalReview by grade and geometry
3D printingReview by grade and geometry
05 · NEXT COMPARISON