Overview

Our proprietary Tetratex™ expanded polytetrafluoroethylene (ePTFE) membrane is the core technology behind our vents, protecting devices and enclosures from temperature and pressure fluctuations, moisture and harmful contaminants. Our wide range of filter media options increases the effectiveness and reliability of micro-environments and can help to extend product life.

Tetratex membrane has a unique microporous structure. It is comprised of small randomly connected fibrils that render an effective pore size many times smaller than can be seen by the naked eye. Tetratex membrane microporous films are naturally hydrophobic and can be used as permeable water barriers for venting or breather filters for gas sensors, electronics and more. Donaldson's proprietary oleophobic treatment process also makes filter media repel oils.

Design Expertise

Our experts will provide the most effective venting solution for your needs by helping you select the appropriate filter media. Donaldson is a technology-driven company committed to satisfying customer needs through innovative research and development with production and offices located throughout America, Europe and Asia.

Donaldson places great emphasis on high quality customer service and manufacturing and is IATF 16949:2016 certified, a testament to our high standards.

Features

  • Tetratex ePTFE Membrane delivers a high particulate capture rate
  • Exceptional flow rates with low inlet pressure
  • Dissipates heat in micro-environments
  • Equalizes pressure
  • Repels water and oil
  • Regulates moisture
  • Chemically inert
  • Toxicity tested to USP 23, Class VI
  • High solids holding capacity
  • Easy connection to other materials as well as excellent mechanical resistance in harsh environments

Protection

The extreme chemical inertness of ePTFE (polytetrafluoroethylene) allows Tetratex technology to be used in a wide range of applications. Tetratex media is dimensionally and chemically stable in almost any chemical environment ranging in temperature from -250° C / -418° F to 280° C / 536° F. Tetratex ePTFE membrane is manufactured to a range of pore structures, widths and thicknesses to meet a variety of industry requirements.

Applications

Automotive

  • Motors & pumps
  • ECUs
  • SCR
  • Battery packs
  • Sensors
  • Powertrain

Electronics

  • Personal electronics
  • Air Quality sensors
  • Outdoor lighting
  • Telecommunications
  • Outdoor electronics

Medical

  • Ostomy bags
  • Hearing aids