PTFE, 25% glass filled
Fluoropolymer
Glass-reinforced PTFE for reduced cold flow and better wear resistance.
Adding 25% glass fiber to PTFE substantially reduces its tendency to cold-flow under sustained load and improves wear resistance, while retaining most of the base resin's chemical inertness and temperature range.
Specs
- Density
- 0.0809 lb/in³
- Stock thicknesses
- 0.125, 0.25, 0.5, 0.75, 1 in
- Sheet size
- 48 x 24 in
- Brands available
- Any approved source
Price depends on size, quantity, tolerance and finish - get an exact number for this material in seconds.
Why this material
Choose glass-filled PTFE over the virgin grade whenever the part is under sustained mechanical load - the reduced cold flow is the entire reason this grade exists.
Typical applications
- Load-bearing seals and wear rings in chemical service
- Valve components requiring dimensional stability under load
- Piston rings and rotary seal components
- Bearing surfaces in corrosive environments
Handling notes
- Glass fiber slightly reduces chemical resistance and electrical insulating properties versus virgin PTFE - confirm against your specific chemical exposure if it's critical.
Questions
Does glass-filled PTFE still resist the same chemicals as virgin PTFE?
Mostly, but not entirely - the glass fiber itself is not chemically inert. For aggressive acid or base exposure, confirm compatibility for your specific chemistry.
Will glass-filled PTFE hold a tighter tolerance than virgin PTFE?
It holds dimension better under load after machining, but PTFE as a family still isn't offered in our tightest tolerance tier.
Is glass-filled PTFE electrically insulating?
Less so than virgin PTFE. If electrical insulation is the primary requirement, virgin PTFE is the better choice.