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PUW EPTFE  Material Co., Ltd. It is a high-tech company integrating R&D, production, sales and service.

The company introduces international advanced technology and focuses on the development and application of expanded polytetrafluoroethylene (PTFE).

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Waterproof Membrane
  • Waterproof Membrane

Waterproof Membrane

Model: PUW879

PUW Waterproof Membrane is an advanced, high-performance solution for protecting sensitive electronics, outdoor gear, and other valuable assets from the harmful effects of moisture, dust, and environmental exposure. With its superior waterproofing, breathability, and durability, it ensures that your products remain safe, functional, and long-lasting in even the most extreme conditions.
Product Details

A Waterproof Membrane is a high-performance protective material designed to prevent water infiltration while maintaining excellent breathability. Unlike traditional sealing methods, modern membranes are engineered using expanded PTFE (ePTFE) technology and advanced composites, making them both waterproof and breathable. This dual function is essential in preventing condensation, protecting sensitive electronics, and ensuring long-term durability in various industries.

Whether referred to as a Waterproof Breathable Membrane, Waterproof Venting Membrane, or Waterproof Membrane Disc, these products serve the same purpose: to provide a reliable barrier against liquid water while allowing gases and vapors to pass through, balancing internal and external pressures.

Waterproof Membrane

Key Features

  1. Excellent Waterproofing

    • Provides superior resistance to water penetration, with protection levels ranging from IP65 to IP68.

    • Prevents rain, snow, and humidity from entering enclosures and damaging internal components.

  2. Breathable Design

    • Functions as a Waterproof Breathable Membrane, allowing water vapor to escape efficiently.

    • Prevents condensation and moisture buildup inside sealed enclosures.

  3. Durability in Harsh Environments

    • Withstands extreme temperatures from -50℃ to 250℃, depending on the model.

    • Resistant to chemicals, oils, and environmental stressors.

  4. UV and Weather Resistant

    • Maintains long-term stability under direct sunlight, cold, heat, and high humidity.

    • Suitable for outdoor, marine, and industrial applications.

  5. Eco-Friendly and Safe

    • Made from non-toxic and environmentally friendly materials.

    • Complies with global safety and environmental standards, suitable for sensitive fields such as medical devices.

  6. Customizable

    • Available in various sizes, thicknesses, and shapes.

    • The Waterproof Membrane Disc format is widely used for easy installation on electronic devices, sensors, and small enclosures.



ModelProtection levelAir penneabilityColorThicknessTemmperature Range
PUW878WIP654000-5000ml/cm²/min@7kpawhite0.13±0.03-50℃~100℃
PUW316IP663700-5000ml/cm²/min@7kpawhite0.20±0.03-50℃~130℃
PUW575IP662200-3200ml/cm²/min@7kpawhite0.28±0.03-50℃~120℃
PUW875IP663000-4000mVcm³/min@7kpawhite0.24~0.30-50℃~130℃
PUW317IP672000-3500ml/cml/min@7kpawhite0.18±0.03-50℃~130℃
PUW576IP671000-1500ml/cm²/min@7kpawhite0.15±0.05-50℃~130℃
PUW657IP67170-350ml/cm²/min@7kpawhite0.08-0.14-50℃~100℃
PUW867IP671900-2400ml/cmi/min@7kpawhite0.15±0.04-50℃~130℃
PUW871IP67400-1000ml/cm²/min@7kpawhite0.13±0.03-50℃~100℃
PUW872IP672000-3000ml/cm²/min@7kpablack0.13±0.03-50℃~100℃
PUW876IP67300-600ml/cm²/min@7kpawhite0.09-0.15-50℃~150℃
PUW302WIP682900-3400ml/cm²/min@7kpawhite0.02±0.01-50℃~250℃
PUW310GIP68100-350ml/cm²/min@7kpadark grey0.20±0.03-50℃~250℃
PUW318IP68800-1700ml/cm²/min@7kpawhite0.20±0.03-50℃~130℃

The above is part of the product data.If you want to know more information or customize production,please contact with our staff.


Benefits

  1. Protects Sensitive Electronics – Acts as a Waterproof Venting Membrane for sensors, LED lighting, and communication devices.

  2. Prevents Condensation & Corrosion – Balances air pressure and avoids water vapor accumulation inside enclosures.

  3. Improves Sealing Performance – Reduces stress on gaskets and seals by equalizing pressure.

  4. Long-Term Durability – Resistant to environmental degradation, ensuring cost-effective, long-term use.


Applications

  1. Outdoor Lighting – Used in LED outdoor lights, lanterns, and garden lighting systems.

  2. Electronics & Sensors – The ePTFE Waterproof Membrane protects sensors, cameras, and smart devices from water ingress.

  3. Medical Devices – Ensures reliable performance by keeping sensitive instruments moisture-free.

  4. Automotive & Marine – The Waterproof Membrane Disc is widely used in headlights, vehicle sensors, and marine navigation systems.

  5. Solar Energy Systems – Prevents condensation in solar panel enclosures.

  6. Industrial Equipment – Provides protection against chemicals, moisture, and extreme temperature variations.


FAQ

1. What is a Waterproof Membrane?
A Waterproof Membrane is a barrier layer that blocks liquid water but allows vapor to pass, ensuring devices stay dry without trapping condensation.


2. What is the difference between Waterproof Breathable Membrane and Waterproof Venting Membrane?
They are often interchangeable terms. Both describe a membrane that combines waterproofing with breathability. The difference lies in application context: “breathable” emphasizes vapor transmission, while “venting” highlights pressure equalization.


3. What materials are used?
Common options include ePTFE Waterproof Membrane, PVC, and composite fabrics. ePTFE is highly valued for its balance of waterproofing, breathability, and chemical resistance.


4. Can membranes be customized?
Yes. Membranes can be supplied in rolls, sheets, or as Waterproof Membrane Discs, depending on the application. Size, thickness, and air permeability can all be tailored.


5. Where are they used?
From consumer electronics to automotive, medical, and industrial fields, Waterproof Membranes are essential in protecting against water ingress while maintaining air balance.


Previous: Waterproof Venting Membrane2024-12-30
We have been committed to the promotion and application of new EPTFE materials and technologies as well as waterproof and breathable products.

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Telephone: 0769-22850556

Email: lvch@puw-eptfe.com

Address: No.20, Wanjiang Industrial Street, Wanjiang District, Dongguan City, Guangdong Province, China

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