Porex® Microporous IP Rated Vents Protects Electronics in Difficult Environments

A great challenge to electronics manufacturers has always been to pressure equalize waterproof enclosures while keeping dirt, dust and moisture out, especially when that equipment is in challenging environments such as high heat and large pressure and temperature variations.

Over the years, Porex® has leveraged its polytetrafluoroethylene (PTFE) sintered microporous membrane technology to develop solutions just for those challenges. Microporous PTFE is well known for its strength, toughness and overall durability versus the broadly available expanded PTFE (ePTFE) that normally will require a secondary backing material to avoid breakage failures or membrane fatigue.

Porex® microporous PTFE IP rated protection vents are used in enclosed electronic devices to protect delicate components from challenging environmental conditions. Through its high airflow, the protection vents allow for rapid pressure equalization and minimize internal condensation, while keeping dust, dirt, and moisture out.   Our customers are using both standard or custom solutions that utilize a microporous high-temperature PTFE membrane, which is UL 94 V-0 flame rated, UL 746C – f1 outdoor rated, and rated for up to IP68 type applications.


Products are available with a pressure sensitive adhesive backing, or membranes can be heat or vibrationally welded or mechanically clamped into place, creating a strong bond as the bonded surface melts in top and around the porous structure, in effect creating hocks that hold it in place.


Used in a wide variety of applications from automotive headlamp and electronic control assemblies to household electronic appliances such as electric toothbrushes and shavers, to protecting satellite dishes and solar panel arrays, Porex PTFE membranes can be found in many of your everyday products.

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.

Want to learn more about our PTFE materials? Click here!


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