Specialized Items
PTFE Gaskets
Gaskets and seals delivering excellent purity, low seating stress and reduced creep or cold flow, produced in all standard ANSI flange sizes plus welded one-piece construction.
Technical specifications
| Dimensional availability | ANSI B16.21 and DIN flange sizes; Class 150/300; custom thicknesses and profiles |
|---|---|
| Tolerances | Cut profile and thickness to approved drawing; CNC work available to ±0.05 mm where applicable |
| Available grades | Virgin PTFE, 15% Glass-filled PTFE, 25% Glass-filled PTFE, 25% Carbon-filled PTFE, Bronze-filled PTFE |
| ASTM test references | ASTM D4894, ASTM D4745 |
Final dimensions, tolerances and material grade are confirmed against your drawing and service conditions.
Applications & selection
Typical uses
- Flange sealing
- Damaged or rough face sealing
- One-piece welded seals
Industries: Chemical, Pharmaceutical, Food processing.
Selecting the right construction
Provide flange standard, bolt loading, sealing-face condition and gasket thickness. Review creep, seating stress and medium compatibility before selecting a grade.
Chemical resistance depends on the polymer, fillers, inserts and process conditions. Confirm the exact medium and concentration; general PTFE properties do not establish a complete assembly's service rating.
Interactive product model
Buyer questions
Where are ptfe gaskets used?
Flange sealing, Damaged or rough face sealing, One-piece welded seals. Typical sectors include Chemical, Pharmaceutical, Food processing; suitability depends on the actual service conditions.
What sizes can I request for ptfe gaskets?
ANSI B16.21 and DIN flange sizes; Class 150/300; custom thicknesses and profiles. Final dimensions and tolerances are agreed during quotation.
What should I specify when ordering ptfe gaskets?
Provide flange standard, bolt loading, sealing-face condition and gasket thickness. Review creep, seating stress and medium compatibility before selecting a grade.
How is material suitability confirmed for specialized items?
Submit the exact medium, concentration, temperature, pressure and mechanical duty. Grade availability and compatibility are confirmed for the specific construction; an ASTM reference is not a product certification.
Selecting a filled grade? Read our PTFE vs Teflon engineering guide.
Related products
Request a quotation
Include quantity, dimensions or a drawing, required material and the operating medium. Add concentration, temperature, pressure and motion or shaft speed where relevant. Final grade, inspection requirements and service limits are confirmed during quotation.
Request Quote for PTFE Gaskets