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What is Expanded PTFE


What is Expanded PTFE?

Expanded PTFE is microporous so air-permeable, and is perfect for any applications that require a permeable material. As such, ePTFE is different to conventional PTFE. The material is soft and flexible, and feels somewhat like smooth, spongey marshmallow to the touch.  Expanded PTFE is often used in the form of cord, sealing tape or tubing.

The Benefits of expanded PTFE

Expanded PTFE shares similar properties to PTFE. The material is completely non-toxic and hygienic, and also offers working temperatures up to 260°C. In addition, ePTFE enjoys the following benefits:

• Chemically resistant with high linear strength
• Chemically inert
• Watertight at low pressure
• Low dielectric constant
• Excellent radial expansion and UV resistance
• Different levels of porosity available - Low, medium and high density

Applications for ePTFE

Thanks to its permeable property, expanded PTFE is ideal for use in medical devices, electronic insulators, high performance filters and various other applications. In oil and gas, this porous fluoroplastic is usefully applied to chemical pipe flanges to even out any bumps and ridges in the pipes and achieve a truer seal.

ePTFE is also used to produce a mesh-like structure for implants, which whilst being soft, strong and flexible, is also very porous. When implanted, this allows body-tissue to grow seamlessly into it, making it an excellent material for use in vascular grafts, hernia repair and other reconstructive surgery.

Expanded PTFE is perfectly suited for environmental filtration and fluidic purification applications. We worked on a project to purify water using ePTFE tubing. Our customer flowed some Ozone gas through expanded PTFE tubing, which then leaked out into the iron-rich water and purified it. As a result, the water purification technology with the help of this unique fluoroplastic helped deliver clean, safe water. Find out more about this purification project.

What Expanded PTFE Products We can Make?

1. Expanded PTFE Gasket Sheet
2. Expanded PTFE Gasket
3. Expanded PTFE Joint Sealant Tape

Expanded PTFE