6. What is the technology behind GORE® Vents?

GORE advanced venting technology when it discovered a unique microporous GORE™ Membrane of 100% ePTFE (expanded Polytetrafluorethylene).

ePTFE is resistant to virtually all industrial chemicals. (For a complete list, see "Chemical Resistance of ePTFE.”) It is also one of the most versatile thermoplastics available, due to its high thermal stability and low coefficient of friction. It also has the ability to be modified for very precise performance characteristics.

Gore has developed and continuously improved this technology, creating vents with a variety of distinctive properties. Examples include hydrophobic membranes that repel water or other high surface-tension fluids, or oleophobic membranes that repel oils, soaps, alcohols and other low surface-tension fluids in addition to their hydrophobic properties.

Our growing portfolio of GORE® Protective Vents encompasses a wide range of product forms and sizes, with varied performance characteristics, to deliver superior reliability in many different applications.

7. What product forms are available? What is each best for?

GORE® Protective Vents come in Screw-In, Snap-In and Adhesive forms.

  • Screw-In Vents: for easy installation, and for rugged applications that require durable protection against water, salts and corrosive liquids, even after immersion.
  • Snap-In Vents: for high-throughput application, and deliver consistent, long-lasting performance in harsh environments.
  • Adhesive Vents: for a space-saving low profile, and the most flexible installation options (manual or automated, interior or exterior enclosure mounting).

8. How do I choose a product for my particular application?

Within each product form, many different sizes, structures and performance properties are available. Your Gore contact person can help you determine which is optimal for your application, based on factors such as:

  • mechanical robustness required
  • applicable ratings (such as Ingress Protection)
  • enclosure design and size (space available)

Please see our FAQs on "Device Design, Vent Selection and Installation" for more information.

9. For all these vents, does the membrane “breathe” in both directions?

Yes. While GORE® Protective Vents prevent liquids and contaminants from entering the enclosure, they allow air and other gases to pass freely through the membrane in both directions. This continuous bi-directional air and gas exchange rapidly equalizes pressure differentials between the inside of the enclosure and the outside environment.

Gore offers a range of venting products with varying airflows, depending on how quickly you need your enclosure to vent. (Our FAQs on "Device Design, Vent Selection and Installation" will tell you more.)

10. Do GORE® Protective Vents require an initial response pressure to enable ventilation?

No. The microporous structure of the GORE™ Membrane enables air and gases to flow even at the smallest difference in pressure. Unlike classic valve systems, such as mushroom valves, no response pressure is required to enable gas transport / pressure equalization.

11. What type of adhesive is on GORE® Adhesive Vents?

We use Pressure Sensitive Adhesives of either acrylic or silicone base, depending upon application requirements. Our Adhesive Vents product data sheet details the temperature resistance and system performance for the specific adhesive used on each vent.

12. Are GORE® Protective Vents RoHS compliant?

W. L. Gore & Associates declares that the products listed on the GORE® Protective Vents website are below the thresholds established in EU Commission Decision Directive 2011/65/EU, Directive 2002/95/EC (RoHS) and Directive 2003/11/EC.

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