Vapor Membranes | Seal & Design

Vapor Membranes

Vapor MembranesSeal & Design specializes in cutting hydrophobic, oleophobic and hydrophilic ePTFE venting membrane materials. These venting systems equalize pressure in applications that require a continuous exchange of gases between internal and external environments, while preventing liquids and contaminants from entering your enclosure.

We manufacture our vents in a variety of standard shapes and sizes, but if you require a custom design, we can engineer the proper venting solution for any application. Our extensive material portfolio offers a specific product for every industry and application, including exterior light lenses, medical devices, electronic controls, pressure sensors and telecommunication devices.

Info Vapor Membranes have a variety of applications. A Seal & Design sales representative will be happy to help you find the best product for your application.

Vapor Membrane Material Offerings

Product Type
5 mil
Olephobic ePTFE Membrane Laminate
Function Layer: PTFE
Backer Material: Polyamide
Vapor Membrane QBV657 PDF
6-10 mil
Hydrophobic ePTFE Membrane Laminate
Function Layer: PTFE
Backer Material: Polypropylene
Vapor Membrane QL209 PDF
6-10 mil
Olephobic ePTFE Membrane Laminate
Function Layer: Olephobic ePTFE
Backer Material: Polypropylene
Vapor Membrane QL210 PDF
3-7 mil
Olephobic ePTFE Membrane Laminate
Function Layer: PTFE
Backer Material: Polyester
Vapor Membrane QP944C PDF
7-9 mil
ePTFE Membrane Laminate
Function Layer: PTFE
Backer Material: Nonwoven Polyester
Vapor Membrane QP917 PDF
6-15 mil
Olephobic ePTFE Membrane Laminate
Function Layer: PTFE
Backer Material: Polyester
Vapor Membrane QP950C PDF

Automotive Venting

Automotive Application Fact Sheet Car Headlight

Different aspects of automotive equipment are exposed to environmental changes such as temperature, water, dirt, debris, and even contact with automotive fluids.

Automotive vapor membranes provide reliable protection from debris, water, dust, and automotive fluids, while allowing for rapid equalization of pressure.

Reliable venting materials can reduce manufacturing costs and the complexity of component design by lessening the need heavier seals, gaskets, and housings.

Automotive vapor membranes can be found in automotive sensors, control units, motors, exterior lighting, powertrain, and power steering systems.

Diagnostic Venting

Diagnostic TestingA major segment in Point-of-Care IVD (In Vitro Diagnostics) is the category of rapid diagnostic tests.

Many of these tests, including Lateral Flow Strip and Immunoblot Strip testing, require microporous membranes for air venting/filtration, fluid venting/filtration, and particle retention.

Electrical Venting

Solar PanelsHarsh environmental conditions can cause a decrease in performance and lifespan of sensitive electronics.

Telecommunications systems, solar energy systems, heavy duty equipment, and other outdoor applications contain electrical equipment that are exposed to environmental changes.

Proper ventilation provides protection from contaminants and liquids and promotes pressure equalization through air flow, effectively extending the life and performance of other seals.

Hydrophobic Barriers for Cameras and Electronics

GoPro CameraMany cameras and portable electronics contain hydrophobic barriers to protect against liquids, dust, and pressure changes from everyday use.

Hydrophobic immersion vents protect sensitive electronics against moisture and allow for reliable protection of underwater cameras and devices.

Medical Venting

IV BagMedical personnel and patients rely heavily on medical equipment to perform safely and reliably. Microporous membranes are designed for high levels of gas permeability to allow for sufficient airflow and pressure equalization in medical devices.

Medical liquids can contain gases that may present a hazard to the patient or affect the operation of the device if not vented properly. IV lines, for example, use venting membranes to dissipate gas bubbles while retaining liquids under pressure.

Outdoor Lighting Venting

Outdoor LightsEnvironmental changes can cause increased strain on the seals of sensitive outdoor equipment.

Outdoor lighting equipment is exposed to varying temperatures, moisture, and weather changes that can quickly decrease their performance, reliability, and lifespan.

Proper ventilation effectively blocks contaminants including dirt and dust, while allowing air flow to equal pressure, which will increase the service life of the equipment.

Package Venting

Chemical BottlesSerious consequences can result from containers with active chemicals and formulations that are not properly ventilated.

These packages run the risk of bloating or collapsing, ruined labels, and leakage leading to costly cleanups and dissatisfied customers.

When it comes to agricultural products, and industrial and household chemicals and cleaners, leaks and ruptures could pose a severe risk to the users and the environment.

Proper ventilation allows air and gas molecules to pass, equalizing pressure, while preventing leakage of dangerous liquids.

Sensor Protection

Smoke DetectorSensors are becoming smaller and more versatile allowing use in applications that were not previously possible.

Exposure to harsh environments including high-pressure, drastically changing temperatures, hazardous chemicals and gases, and contaminants can decrease the accuracy and functionality of a sensor.

Sensor Protection membranes provide an effective barrier against these conditions and can eliminate the effects of fluctuating temperatures and pressure differentials.

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