Press-Fit Vents

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.

Key Features & Benefits

• 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