Kaxite manufactures expanded PTFE joint sealant tape from 100% virgin expanded polytetrafluoroethylene with a self-adhesive backing strip. The tape is supplied on a peel-off liner, so it can be pressed directly onto a flange face and formed into a continuous gasket on site — no cutting dies, no pre-cut inventory, no size guessing.
Because the material is pure expanded PTFE with no fillers, binders or pigments, it delivers the full chemical inertness of virgin PTFE. It conforms to rough, pitted, scratched, corroded and heat-cycled flange faces, and it wraps cleanly around round, oval, rectangular and other non-standard geometries. Service range is −240 °C to +260 °C across the full pH 0–14 range.
Buyers typically specify it for enamel and glass-lined equipment, chemical and petrochemical flanges, pharmaceutical and sanitary lines, and any joint where a conventional cut gasket will not seat properly.
Build the gasket directly on the flange. Rough, pitted and damaged faces seal without re-machining.
No binders, pigments or regrind. Identical chemical resistance to virgin PTFE.
Round, oval, rectangular and irregular flange outlines from a single roll.
Stock it indefinitely. No ageing, no hardening, no wasted inventory.
| Width (mm) | Thickness (mm) | Roll Length | Density (g/cm³) | Typical Flange Range |
|---|---|---|---|---|
| 3 | 1.5 / 2 / 3 | 15 m / 25 m | 0.7 – 0.9 | DN15 – DN50 |
| 5 | 2 / 3 / 5 | 15 m / 25 m | 0.7 – 0.9 | DN25 – DN100 |
| 8 | 3 / 5 | 15 m | 0.7 – 0.9 | DN50 – DN150 |
| 10 | 3 / 5 / 6 | 15 m | 0.7 – 0.9 | DN80 – DN300 |
| 15 | 5 / 6 / 8 | 10 m | 0.7 – 0.9 | DN150 – DN600 |
| 20 | 5 / 6 / 8 | 10 m | 0.7 – 0.9 | DN200 – DN800 |
| 25 | 6 / 8 / 10 | 10 m | 0.7 – 0.9 | DN400 and above |
| Parameter | Value |
|---|---|
| Base material | 100% virgin expanded PTFE, no fillers or binders |
| Operating temperature | −240 °C to +260 °C (−400 °F to +500 °F) |
| Pressure capability | Up to 200 bar, depending on flange rating and bolt load |
| pH resistance | 0 – 14, full range |
| Density | 0.7 – 0.9 g/cm³ |
| Compressibility | Approximately 40 – 50% |
| Recovery | ≥ 30% |
| Chemical compatibility | Resists virtually all industrial fluids: acids, alkalis, solvents, oxidisers |
| Creep and cold flow | Resistant; maintains sealing load over time |
| Shelf life | Unlimited; no ageing deterioration when stored dry |
| Food-contact documentation | FDA and EC 1935/2004 compliance certificates available on request |
Kaxite operates an ISO 9001:2015 certified quality management system with more than 25 years of PTFE processing experience. Every production batch of expanded PTFE joint sealant tape is checked for density, tensile strength, elongation, width and thickness tolerance, and adhesive peel strength before release. Full material traceability and batch certificates are issued with each shipment, and we currently export to more than 40 countries.
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