One material, three forms, three different jobs
PTFE has the lowest coefficient of friction of any known solid material, one of the widest service temperature ranges of the common sealing plastics, and effectively universal chemical resistance. The form you choose decides how it behaves under bolt load.
Skived and moulded sheet for cut gaskets, sliding pads and linings. Expanded (fibrillated) sheet where flanges are irregular, damaged, or bolt load is limited. Expanded tape for sealing flanges and manways on site without cutting a gasket.
- Skived sheet 0.2–6.5 mm, moulded sheet 5–100 mm
- Expanded sheet 0.5–7.0 mm, FDA 21 CFR 177.1550
- Joint sealant tape 3×1.5 mm to 50×6 mm
- Cut to drawing, sheets up to 2000 × 1000 mm
Products in this category
PTFE Sheet
Skived or moulded virgin PTFE sheet, 0.2 mm to 100 mm thick.
Expanded PTFE Sheet
100% PTFE expanded sheet for flanges — FDA compliant.
Expanded PTFE Joint Sealant Tape
Expanded PTFE sealing tape, -180 to +260 °C, cut to length on site.
Compare the grades
| Product | Model | Temperature | Pressure | pH | Typical use |
|---|---|---|---|---|---|
| PTFE Sheet | LS-9101 | -180~260 °C | — | 0~14 | Cut gaskets, pads, linings, insulation |
| Expanded PTFE Sheet | LS-9201 | -260~260 °C | Vacuum–3000 psi | 0~14 | Gaskets on irregular or damaged flanges |
| Expanded PTFE Joint Sealant Tape | LS-9001 | -180~260 °C | — | 0~14 | On-site sealing of flanges and manways |
Which form to specify
Virgin PTFE sheet
Dense, dimensionally stable, machinable. Use where the flange is sound and bolt load is available — gaskets, wear pads, electrical insulation, tank linings.
Expanded PTFE sheet
Soft, compressible, fibrillated. Conforms to rough, pitted or glass-lined flanges at low bolt load, and is FDA compliant for food and pharma.
Expanded PTFE tape
Self-adhesive cord in a flat tape form, cut to length on site. One coil covers many flange sizes — practical for maintenance stores.
Material data — virgin PTFE
| Item | Unit | Result |
| Density | g/cm³ | 2.10 – 2.30 |
|---|---|---|
| Tensile strength | MPa | ≥ 15.0 |
| Elongation at break | % | 150 |
| Dielectric strength | kV/mm | 10 |
| Service temperature | °C | -180 to +260 |
| Coefficient of friction | — | Lowest of known solid materials |
Values are typical for virgin PTFE. Expanded PTFE has lower density and higher compressibility — see the product page for its sealing data.
Media and industries
- Chemical processing
- Food & pharmaceutical
- Semiconductor
- Petrochemical
- Marine
- General industry