Welcome to Know Expanded PTFE Joint Sealant Tape
Expanded PTFE joint sealant tape is made of solid PTFE and conforms easily to rough and irregular surfaces, requiring lower bolt torques than most other gaskets. This joint sealant tape can withstand a wide range of chemicals and meets FDA regulations. It is easy to cut and form, and the adhesive backing makes it easy to install on narrow and hard-to-reach flanges.
It is available from stock in different widths, from 3 mm to 50 mm, and various thicknesses, from 1 mm to 10 mm. And we can customize any sizes you want. Contact us for more information.

Applications
Expanded PTFE joint sealant tape is odorless and tasteless, making it suitable for food applications. It is so easy to install and remove, making it a cost-effective solution for many demanding sealing applications. Its typical applications are glass flanges, heat exchangers, large flanges and containers, pressure vessels, suction filters and strainers, etc.
Industries Served:
- Water and Wastewater
- Chemical Processing
- Food and Beverage
- Pharmaceutical
- Pulp and Paper
- Primary Metals
- Oil and Gas
- Mining
Advantages
Expanded PTFE joint sealant tape has an unlimited shelf life and shows no age deterioration. It is quick and simple to install; no cutting or punching is necessary. The used tape can be easily removed without leaving any deposits on the sealing areas. Its excellent malleability makes the repair of minor damages and irregularities unnecessary.
Typical Properties
| Properties | Test Methods | Unit | Value |
|---|---|---|---|
| Density | ASTM D792 | g/cm3 | 0.7 |
| Compressibility | ASTM F36 | % | 65 |
| Recovery | ASTM F36 | % | 10 |
| Tensile Strength Across Grain | ASTM F152 | mpa | 21 |
| Sealability (Nitrogen) | ASTM F37A | ml/hr | 0.1 |
| Working temperature | - | °C | -200 to 260 |