PUW Plastic Air Vents are specially engineered to protect sensitive electronic equipment from environmental challenges such as water, dust, temperature fluctuations, and chemical exposure. Designed for both performance and flexibility, our air vents deliver high weather resistance, robust structural strength, and a long service life, making them the ideal choice for industries demanding reliable enclosure protection.


Product model | PUWKK8.5-3.6 |
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product type | Plastic vent valve | Body material | PC |
Air permeability ml/ min@7kPa | 300-800 | Degree of protection | IP67 |
Air permeability ml/ min@7kPa | 100-350 | Degree of protection | IP68/IP6K9K |
Thread length | / | Installation mode | / |
colour | black/darkgrey/off-white | temperature range | -40°C~115℃ |
Installation torque | / | Flame retardant grade | UL94-V0 |
Application | LED outdoor lighting industry
Automobile manufacturing industry
Solar photovoltaic industry
Electronic and electrical industry
Communication equipment industry
Security equipment industry |
How It Works — The Venting Principle
Electronic enclosures often experience internal pressure changes due to temperature variation or altitude shift. Without proper venting, this pressure difference can lead to:
Deformation of the housing
Seal failure and water/dust ingress
Shortened lifespan of internal components
PUW’s plastic air vents use a microporous PTFE membrane that allows air and gases to pass freely while blocking water, dust, oil, and contaminants. This pressure equalization function keeps the enclosure balanced, dry, and protected — ensuring optimal operation of electronic components.
Product Features
High Weather Resistance
Excellent performance in extreme outdoor environments. UV resistant, anti-aging, and stable under long-term exposure to sun, rain, and wind.
High Structural Strength
Reinforced plastic housing resists impact, vibration, and deformation. Suitable for high-vibration applications such as automotive or industrial equipment.
Extended Service Life
Durable materials and advanced sealing ensure long-term use with minimal maintenance. Reduced failure rates improve device reliability.
Customizable Materials & Models
Choose from various plastic materials, thread types, vent diameters, and membrane grades. OEM/ODM customization supported, including logo, structure, color, airflow rate, and packaging.
Applications
PUW Plastic Air Vents are trusted across multiple industries where environmental sealing and pressure equalization are critical:
Automotive Electronics
Control modules, battery systems, headlights, ADAS cameras. Protect against pressure buildup, moisture, and road chemicals.
Telecommunication Equipment
Outdoor base stations, antennas, routers, signal amplifiers. Maintain stable internal pressure while preventing condensation.
Smart Home Devices
Outdoor security cameras, doorbells, smart locks. Enhanced reliability in all-weather conditions.
LED Lighting Systems
Street lights, tunnel lights, solar-powered lights. Venting improves heat dissipation and prevents lens fogging.
Industrial Control Boxes
Sensor housings, junction boxes, power inverters. Prevent corrosion and overheating in harsh working environments.
Surveillance & Monitoring Systems
Enclosures for outdoor CCTV, wildlife cameras, environmental sensors. Critical for clear imaging and uninterrupted monitoring.
Why Choose PUW
Over 10 Years in Waterproof & Venting Technology
Strict Quality Control with International Certifications
Fast Global Delivery and Flexible MOQ
Responsive Service & Engineering Support for Custom Projects
FAQ
1. What is the main function of a plastic air vent in electronic enclosures?
The primary function is to equalize internal and external pressure while preventing water, dust, and other contaminants from entering the enclosure. This helps protect internal electronic components and extend their service life.
2. Is the plastic air vent waterproof?
Yes. Our plastic air vents are equipped with a microporous PTFE membrane and are rated up to IP68, ensuring effective waterproof and dustproof performance.
3. Can I customize the air vent to fit my enclosure design?
Absolutely. We offer full OEM/ODM customization services, including vent size, color, structure, mounting style (threaded, snap-in, adhesive), airflow rate, and branding/logo.
4. What materials are used in PUW plastic air vents?
We use UV-resistant plastic for the housing and hydrophobic or oleophobic PTFE membranes for the venting layer. Material options can be adjusted based on your environmental or application needs.
5. How long is the typical service life of the vent?
Our vents are designed for long-term durability and can last for many years, even under extreme weather conditions such as high UV exposure, temperature fluctuations, and corrosive environments.