POREX Virtek™ sintered PTFE is a versatile polymer used in a broad range of medical, electronics, automotive, and high technology applications. It is inert, making it unreactive to most chemicals and environments, plus it can work in high temperature environments (500°F / 260°C continuous).

POREX Virtek™ offers all these excellent properties formed into a microporous structure that creates key functionality for venting, filtering and other properties. POREX Virtek™ sPTFE is an ideal choice for demanding applications requiring one or a combination of these properties.  Click here for the Virtek® PTFE materials overview.

Key Benefits


  • 100% PTFE
  • Chemically inert
  • High temperature resistance (500°F / 260°C continuous use)
  • Compatible with steam and EtO (ethylene oxide) sterilization
  • Compatible with ultrasonic/thermal welding and inset molding
  • Extremely hydrophobic
  • USP class VI (bio-compatibility)
  • FDA 21 CFR 177:1550 (food contact)
  • UL 94 V-0 and 5VA certification
  • UL 746C f1 rating (outdoor weatherability)
  • Low dielectric constant
  • Low co-efficient of friction
  • Diffuse reflectivity up to 98%
  • Natural white color
  • Can be printed or plated

POREX Virtek™ Microporous polytetrafluoroethylene (PTFE)

POREX Virtek™ sintered PTFE materials offer a durable option to more fragile expanded PTFE membranes. Microporous PTFE is manufactured using a proprietary sintering process, which results in a durable, design-flexible material with long-term value advantages. It can be handled easily, either manually or by high-speed equipment, with minimal damage concern. It can be applied to your device using various techniques, including vibrational or heat welding or adhesives. Click here for the Porex® Microporous PTFE Fact Sheet.

The unique properties of POREX Virtek™ sintered PTFE have made it our customers solution of choice in demanding applications across diverse markets. Due to its purity, chemical inertness, durability and high temperature resistance, POREX Virtek™ sPTFE is used widely in everything from medical systems and consumable devices to electronic equipment protection and life sciences filter media. Designed to deliver precision, accuracy, and reliability, POREX Virtek™ microporous PTFE meets or exceeds the critical design standards required in filtration, venting, diffusion, and media support applications.

POREX Virtek™ PTFE manufacturing standards

 POREX Virtek™ PTFE materials are manufactured in Class 100k clean rooms, under ISO 9001 quality standards. They are available in various formats, including rolls, sheets, die cut, and rotary cut parts and with adhesive backings.