Polymers
Glass-filled PTFE
Incomplete compound description until filler percentage and supplier grade are supplied.
Identity / state reference
What distinguishes this material
TECAFLON PTFE GF25 demonstrates one 25% glass-filled offering. The unspecified family also contains other formulations; unfilled PTFE chemistry alone does not establish their compatibility.
- Designation in this reference
- PTFE plus glass filler; fraction required
- Forms covered by the sources
- Stock-shape rod / plate; confirm supplier process and dimensions
- States to distinguish or confirm
- Exact compound, color and additives recorded
- Extruded / molded route and stress relief recorded
- Temperature and exposure
- Melting point, glass-transition temperature, heat-deflection test and long-term service rating are different quantities. Use a grade-specific value with its load, duration and test conditions.
Other search names in these sources
PTFE GF · PTFE GF25 example
Read the scope above: a source’s related product name is not a blanket interchangeability statement.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- Which manufacturer, exact grade, filler fraction and stock form are specified?
- What moisture conditioning, direction, test method and service temperature apply?
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Ensinger PTFE materials and stock shapes
Virgin TECAFLON PTFE and GF25 products; PTFE family identity and processing route.
Ensinger PTFE materials and stock shapes ↗Ensinger guide to plastic stock shapes
Shows 25% carbon-filled and 25% glass-filled PTFE as distinct offerings. Used for filler identity only; no unconditional speed/temperature/PV data imported.
Ensinger guide to plastic stock shapes ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Remove universal D65 hardness, 60% machinability and speed ranges.
- Do not make the example 25% loading implicit in every glass-filled PTFE purchase.
Other references in Polymers
Related references, not equivalent substitutes.