Polytetrafluoroethylene (PTFE) is a versatile polymer used in a broad range of medical, industrial, and high technology applications. Porous PTFE is inert, making it unreactive to most chemicals, and, it can work in high processing and operating temperature environments (500°F / 260°C continuous).

Porex porous PTFE offers excellent thermal, electrical, mechanical, and chemical properties as well as superior control over pore size, permeability, water entry pressure, and thickness. PTFE is an ideal choice for a wide variety of demanding applications requiring one or a combination of these exceptional properties. Click here for the PTFE materials overview.

Microporous polytetrafluoroethylene (PTFE)

Porex microporous polytetrafluoroethylene (PTFE) materials offer a competitive option to expanded PTFE coatings. Microporous PTFE is manufactured using a proprietary sintering process that results in an intricate network of open-celled, omni-directional pores that offer exceptional performance on and below the surface. Click here for the Porex® Microporous PTFE Fact Sheet.

Our process results in a robust, durable, design-flexible omni-directional material with long-term value advantages. It can be easily handled either manually or by high-speed equipment with minimal damage concern and can be applied using various techniques including vibrational or heat welding.

Designed to help deliver precision, accuracy, and reliability, Porex microporous PTFE exemplifies the critical design standards required in many filtration, venting, diffusion, and media support applications.

PTFE manufacturing standards

Porex PTFE materials are manufactured in Class 100k clean rooms under ISO 9001:2008 quality standards. They are available in a variety of formats including rolls, sheets, die cut, and rotary cut parts and also with adhesive backings.

Key Benefits


  • chemically inert
  • thermally resistant (500°F / 260°C continuous use)
  • compatible with ultrasonic/thermal welding and inset molding
  • hydrophobic and oleophobic
  • omni-directional flow
  • high tensile strength
  • steam and EtO (ethylene oxide) sterilizable
  • natural white or black color
  • UL 94 V-0 @ 0.1mm and 5VA @ 0.75mm
  • UL 746C f1 rating (outdoor weatherability)
  • low dielectric constant (to 1.43)
  • diffuse reflectivity up to 98%
  • used in medical devices
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