Expanded PTFE (ePTFE) Joint Sealant Cord & Tape
Technical Specification
| Material: | 100% expanded PTFE (ePTFE) |
|---|---|
| Forms: | Flat joint sealant tape (often with self-adhesive backing) and round cord |
| Sizes: | Range of widths and diameters on spools; contact us for your size |
| Service Temperature: | Approx. -200°C to +260°C |
| Chemical Resistance: | Resistant to almost all industrial chemicals |
| Note: | Figures are typical; confirm exact grade, size and rating with our team |
Why Use ePTFE Joint Sealant?
- Formed in place: laid around the bolt holes on site, so no cut gasket is needed for large or odd-shaped flanges
- Very soft: seals uneven, warped and damaged flanges at low bolt load
- Chemical resistance: the same chemical resistance as solid PTFE
- Fast maintenance: one spool covers many flange sizes
Applications
- Large-diameter and non-standard flanges
- Glass-lined, FRP and plastic equipment
- Heat exchanger and vessel covers, manways and hatches
- Ducting, fans and blower housings
- Valve bonnets and pump covers
Tape or Cord?
Flat ePTFE tape suits flat-faced flanges and covers; the self-adhesive backing holds it in place during assembly. Round cord suits grooves and irregular joints. Overlap the ends at a bolt hole rather than butting them, and follow the flange manufacturer’s torque guidance.
See also: PTFE (Teflon) Gaskets, Gland Packing and PTFE (Teflon) Products.
Send us your sizes, quantities and service conditions (fluid, temperature, pressure) and our Al Khobar team will confirm availability, lead time and a quotation for delivery anywhere in Saudi Arabia and the GCC. Every order is supplied with a Material Test Certificate.
Frequently Asked Questions
Q1. What is expanded PTFE joint sealant?
A. A soft, flexible tape or cord of expanded PTFE laid on a flange to form a gasket in place.
Q2. Where is ePTFE joint sealant used?
A. On large, uneven, fragile or non-standard flanges, covers, manways and ducts.
Q3. Is expanded PTFE chemically resistant?
A. Yes. It has the same broad chemical resistance as solid PTFE.
Q4. How do I join the ends of ePTFE tape?
A. Overlap the ends across a bolt hole area rather than butting them together.
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