Overview

Donaldson Press-Fit enclosure protection vents are designed to protect enclosures and devices from particles, water, oils, and other liquids without negatively affecting their operation. They are comprised of a filtration material and a pressure-sensitive adhesive ring for securing the vent to the device.

Our press-fit vents resist water, oils, and other contaminants with hydrophobic and oleophobic options. Available in standard or custom sizes, many feature our proprietary Tetratex™ ePTFE membrane and support layers like polyethylene, nylon, or nonwovens, delivering reliable protection and flexibility for tough environments.

Features

  • Wide variety of air flows available
  • Pressure equalization – for large range of enclosure sizes
  • Eliminates the need for costly hermetic sealing
  • Repels water, oils, and other liquids
  • Oil ratings from 1 to 8
  • IP ratings up to IP69K
  • Easy application and device integration
  • Standard and custom sizes and shapes are available
  • Water entry pressure (WEP) up to 70 PSI
  • Weld-Fit (non-adhesive) enclosure protection vents are also available for integration into your device

Standard Materials Available

  • The many options include Donaldson's proprietary Tetratex™ ePTFE membrane. Many also include a support layer made of polyethylene, nonwoven, and extruded materials such as nylon, polyester, polypropylene, and polyester/polyethylene.
  • Hydrophobic and oleophobic options are available
  • Continuous Operating Temperature Range: -40° to 150° C / -40° to 302° F
  • Select materials have short term temperature ranges up to 260° C / 500° F
  • Material data sheets available upon request

Packaging

  • Manufactured, inspected and packaged in clean room environment
  • Typically supplied in roll form on polyethylene cores
  • Roll sealed in cleanroom bag unless otherwise specified

Handling Instructions

  • Wear gloves or use rounded tweezers when handling the vents
  • Mounting surfaces should be clean and free of oils, particles, and other contaminants
  • Vents should be mounted on flat, vertical surfaces where liquids or other contaminants will not pool
  • Follow dispenser instructions when using an automated vent dispenser
  • For manual vent dispensing, roll the liner under the vent until the vent extends beyond the liner and becomes easily accessible
  • Do not pry the vent from the liner or fold the vent, as this could damage the vent

Assembly Instructions

  • Accurate placement of the vents can be improved by using markings, a recessed area, or a target area in which the vent is centered over the vent hole in the device or housing
  • Apply light finger pressure (15 PSI recommended) to the adhesive ring to seal the vent to the device or housing
  • Do not attempt to reposition the vent after installation. This can cause damage to the vents
  • Allow at least 24 hours dwell time before using or testing the vent

Applications:

  • Automotive lighting
  • Automotive electrics – motors, inverters, converters
  • Fluid reservoirs
  • Sensors – humidity, temperature, pressure, and gas sensors
  • Elective vehicle battery packs
  • Lighting enclosures – industrial, outdoor, arena and events lighting
  • General enclosures
  • Protective cases
  • Electrical and communication junction boxes
  • Solar energy enclosures
  • Appliances