Kaxite PTFE skived sheet is produced by skiving — turning a thin continuous layer off a compression-moulded cylindrical billet on a precision lathe. That process gives a sheet that is uniform in thickness across its full width and stays dimensionally stable when cut into gaskets, insulation pads or lining strips. Skived sheet is chemically inert to almost every industrial medium, non-flammable, and an excellent dielectric, which is why it is used in PTFE gaskets, circuit board insulation, pump and valve seals, chemical tank lining and low-friction wear pads. For the moulded sheet alternative, see the PTFE resin moulded sheet page; for the expanded variant, see the expanded PTFE sheet page.
Virgin PTFE powder is pre-formed and sintered into a cylindrical billet. Density and sintering cycle are controlled so the finished sheet has no voids.
The billet is mounted on a precision lathe and trued on the OD so the cut will be parallel across the full width of the skive.
A sharp tool peels a continuous sheet off the rotating billet. The tool geometry and cutting speed set the thickness — this is what gives skived sheet its uniform gauge.
The sheet is trimmed to width, measured for thickness at multiple points, and annealed if the customer requires reduced internal stress for later machining.
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| Parameter | Value | Notes |
|---|---|---|
| Thickness range | 0.25 mm – 8 mm | Thinner gauges available on request |
| Sheet size | Up to 1500 × 1500 mm for thin gauges; smaller for thick gauges | Dependent on thickness and billet size |
| Grade | Virgin PTFE | Reprocessed and filled grades on request |
| Temperature range | -200 to +250 °C continuous | Short excursions above 250 °C degrade the sheet |
| Tensile strength | 2,500 – 4,000 PSI | ASTM D638 / D4894 equivalent |
| Specific gravity | 2.13 – 2.24 | Higher values for filled grades |
| Dielectric strength | ≥ 40 kV/mm | Depends on thickness and grade |
| Colour | Natural white | Black and other colours on request |
Non-standard thicknesses and sheet sizes are quoted from drawings. For thicknesses below 0.25 mm, the skived sheet becomes skived tape and is quoted as a separate line; see the PTFE sheet parent page for the full sheet range.
The three are often quoted together on one purchase order because they serve different parts of the same plant. Kaxite stocks all three; the modified PTFE sheet variant is also available when weldability or reduced creep is required.
Kaxite Sealing skives PTFE sheet in Ningbo, Zhejiang, with billet compression-moulding, lathe skiving, thickness inspection and final packing on one site, so the thickness is verified before the sheet is cut to size. Thickness tolerance is ±10% of nominal for gauges up to 3 mm and ±0.15 mm for gauges above 3 mm unless a tighter tolerance is specified on the purchase order. Global tolerance standards on skived tapes, sheets and films are achievable — send the drawing and the tolerance class and Kaxite will confirm before production. Free samples are available for qualified projects with the material certificate attached. Factory visits and video audits are welcome by appointment; ISO 9001 certificate details are available on request.
Request a PTFE skived sheet quote
Tell us thickness, sheet size, quantity, grade (Virgin or reprocessed), colour and intended application. Free samples and material certificates available for qualified projects.
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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
