Composition & material selection
Glass-filled PTFE for components where wear and deformation under load drive grade selection. Include the mating surface and chemical exposure in the review.
Grade characteristics
Use the complete material designation and service conditions when evaluating a compound.
| Filler family | Glass fiber; composition defined by the selected compound |
|---|---|
| Selection focus | Wear, compressive response and creep |
| Example part duties | Bushings, guide rings and loaded seats |
| Media limitation | Review hydrofluoric acid and strong-base exposure |
| Counterface input | Material, hardness, finish and relative motion |
Glass-filled compounds are considered when an unfilled part changes shape or wears too quickly under its mechanical duty. The selected composition defines the improvement and its limits.
A bearing sleeve, guide ring and valve seat do not impose the same contact condition. Give the loaded area and motion so the grade is selected for the interface.
The glass filler introduces chemical considerations beyond those of the base polymer. Hydrofluoric acid and strong-base environments require a different compatibility assessment.
For sliding contact, include the counterface finish and hardness. Reinforcing filler can affect the mating surface, so assess the wear pair rather than the PTFE component in isolation.
Specific answers
No. The compound disperses glass filler in PTFE. Coated fabric uses a woven glass carrier with a PTFE surface.
No. Additional fillers and the resin and stock form also affect behavior. Use the complete compound specification.
Select by composition
Provide the required compound, component drawing, load and mating-surface details. Include chemical concentration and temperature for media-contact service.
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