Kaxite Sealing manufactures expanded PTFE tape (ePTFE tape) from 100% virgin PTFE through a controlled expansion process that produces a soft, microporous, felt-like structure. We supply joint sealant tape, flange gasket tape and thread sealant tape in widths 10–200 mm, thickness 1.5–10 mm, with or without self-adhesive backing. Procurement teams choose us for factory-direct bulk pricing, FDA and REACH documentation, and 7–15 day lead times.
ePTFE tape is soft, pliable and highly compressible — it flows into grooves, scratches, pitting and glass-lined surfaces that a pre-cut solid PTFE gasket simply cannot bridge. Ideal for repair work and legacy flanges where the sealing face is not perfect.
Instead of stocking dozens of pre-cut gasket sizes, maintenance teams carry one roll of ePTFE tape and cut to length on site. It wraps around any flange circumference — dramatically cutting inventory cost and lead time.
Kaxite ePTFE tape contains no fillers, binders or additives — identical chemical inertness to virgin PTFE across pH 0–14. Compliant with FDA 21 CFR 177.1550 and suitable for WFI, CIP/SIP and semiconductor wet-process service.
ePTFE tape seals at compressive loads far lower than solid PTFE. Combined with 40–60% compressibility and good recovery, joints stay tight through thermal cycling, vibration and differential flange expansion.
Peel-off backing holds the tape in position on both horizontal and vertical flanges. The two ends cross to form a complete sealing ring in place — no tools, no adhesive, no mess. Unlimited shelf life, no age deterioration.
Where solid PTFE cold-flows and leaks over time, ePTFE resists creep relaxation. Standard grade < 15% and high-density grade < 10% (ASTM F38) — maintaining bolt load over long service intervals and reducing re-torquing.
Industrial-grade thread sealant tape for gas lines, chemical processing, LNG, hydrogen and petrochemical service. Density 0.8–1.5 g/cm³ (3–5× denser than plumbing tape). Gas up to 30 bar, liquid up to 150 bar. Certified to DVGW, AGA, BS EN 751-3, NSF-61, WRAS, FDA 21 CFR 177.1550, RoHS and REACH.
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100% virgin PTFE thread seal tape (plumber's tape) for water, gas, hydraulic and pneumatic systems. Widths 12/19/25 mm, gas up to 20 bar, liquid up to 100 bar. Colour-coded options for gas (yellow), drinking water (green) and food-grade (pink). FDA, NSF-61, WRAS and REACH certification on request.
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Wide-format roll of 100% virgin ePTFE for large flanges, vessel shells, manhole covers, heat exchanger heads and tower manways. Widths 10–200 mm, thickness 1.5–10 mm, roll lengths 5–30 m. Service range -268 °C to +260 °C, vacuum to 200 bar, pH 0–14. FDA 21 CFR 177.1550, RoHS and REACH compliant.
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Form-In-Place gasket tape with peel-off backing that holds in position on both horizontal and vertical flanges. 100% pure PTFE with no fillers or binders — inert across pH 0–14, service range -240 °C to +260 °C. The two ends cross to form a complete sealing ring in place. Resists creep and cold flow, unlimited shelf life.
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Self-adhesive form-in-place sealing tape for pipes and joints. Density 0.6–0.8 g/cm³, thickness 1.5–6 mm, widths 10–100 mm. Service range -240 °C to +260 °C, pH 0–14. Conforms to rough, pitted and scratched flange faces, glass-lined and enamel sealing surfaces. FDA 21 CFR 177.1550, RoHS and REACH compliant.
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Form-In-Place gasket material made from 100% expanded PTFE with a self-adhesive strip on one face. No fillers and no binders — same chemical inertness as pure virgin PTFE across pH 0–14, service range −240 °C to +260 °C continuous. Conforms to rough, pitted, scratched and damaged flange surfaces, glass-lined and enamel sealing surfaces. Supplied as rolls and spools; custom width and thickness on request.
View specifications| Product Code | Thickness | Width | Roll Length | Density |
|---|---|---|---|---|
| KX-EPTFE-1.0 | 1.0 mm | 25 / 50 / 100 mm | 10 / 30 m | 0.6 – 0.8 g/cm³ |
| KX-EPTFE-1.5 | 1.5 mm | 25 / 50 / 100 / 150 mm | 10 / 30 m | 0.5 – 0.7 g/cm³ |
| KX-EPTFE-2.0 | 2.0 mm | 50 / 100 / 150 mm | 10 m | 0.4 – 0.6 g/cm³ |
| KX-EPTFE-3.0 | 3.0 mm | 100 / 150 mm | 5 / 10 m | 0.3 – 0.5 g/cm³ |
| Property | Value | Method |
|---|---|---|
| Base Material | 100% Virgin PTFE | — |
| Service Temperature | -240 to +260 °C | Continuous |
| Chemical Inertness | pH 0 – 14 | — |
| Compressibility | 40 – 60 % | ASTM F36 |
| Creep Relaxation | < 15 % / < 10 % HD | ASTM F38 |
| Flame Rating | UL 94 V-0 | — |
Tell us the form (joint sealant tape, gasket tape or thread sealant tape), width, thickness, density grade, self-adhesive backing requirement, roll or cut-sheet preference, and annual volume. Our technical team reviews the media, flange condition and temperature before confirming grade selection.
Negotiable for trial and prototype orders. Free short cut samples of standard widths and thicknesses available for evaluation.
7–15 days for standard rolls; longer for custom widths, densities or self-adhesive backing. FOB Ningbo / Shanghai, CIF and DDP available.
Coils, spools and boxes. Labelled per customer brand on request. Wooden crate for multi-roll bulk shipments by sea or air.
Inspection report with every shipment. Third-party testing (SGS, TÜV) on request. FDA 21 CFR 177.1550, RoHS and REACH documentation with full traceability.
They are fundamentally different products. Regular PTFE thread seal tape (plumber's tape) is a thin, solid film used to lubricate and seal pipe threads. Kaxite Expanded PTFE Tape is a thick, soft, microporous sheet material made by expanding PTFE into a fibrous, felt-like structure. It is used as a gasket material on flanged faces, not on threads. It offers superior conformability, compressibility and sealing force compared with solid PTFE sheet.
Clean the flange surfaces thoroughly. Cut a length slightly longer than the flange circumference. Wrap the tape around the flange, centred over the bolt holes. For larger flanges, butt-join multiple pieces — keep joints tight and stagger them if multiple layers are used. Insert bolts finger-tight, then torque in a crisscross pattern to 30%, 60% and finally 100% of the recommended torque. Always follow the specific torque values for your flange size and class.
Yes. For RF flanges, place the tape within the raised inner section. For FF flanges, the tape covers the entire face including the bolt holes — punch out the bolt holes after wrapping, or use a pre-cut gasket made from the tape. ePTFE tape is highly effective on both configurations.
Pressure capability depends on flange design, bolt load and temperature. ePTFE tape performs excellently in low to medium-pressure process piping, and high-density gasket tape handles vacuum to 200 bar. The continuous service range is -240 °C to +260 °C; at the upper end of the range the pressure rating decreases. Always consult the technical data sheet for application-specific ratings.
Kaxite ePTFE tape is made from 100% pure PTFE and is chemically inert across pH 0–14. It resists strong acids (sulfuric, hydrochloric), strong bases (sodium hydroxide), halogens and organic solvents. Only molten alkali metals and certain fluorine compounds at high temperature and pressure can affect it — well outside normal industrial use.
No. Kaxite premium ePTFE tape is manufactured solely from 100% virgin PTFE polymer — no additives, colorants or fillers. The expansion process creates the microstructure mechanically, not chemically. This ensures maximum chemical resistance, purity and thermal stability, and compliance with FDA 21 CFR 177.1550 for food contact.
Store in the original packaging in a cool, dry place away from direct sunlight, heat sources and dust. Avoid stacking heavy objects on top of the rolls. Under these conditions, the shelf life of PTFE is effectively unlimited — the material does not degrade over time.
Yes. Kaxite specialises in custom sealing solutions. We manufacture ePTFE tape in custom widths, thicknesses, densities and roll lengths to meet your OEM or project requirements. Send your drawing or specification for a quotation.
Send us your tape form, width, thickness, density grade, self-adhesive requirement, roll or cut-sheet preference, or finished-part drawing. Our export team replies within 24 hours and confirms lead time, packaging and documentation before you place a bulk order.
