OxyPad® Self-Adhesive Membrane Pads

Ventilation and Protection from Liquid Ingress, Dust, and Dirt – Made Easy

To achieve more reliable, longer-lasting ventilation of your device, OxyPad® self-adhesive membrane pads can be easily integrated to provide ventilation which helps to avoid harmful condensation, ensures pressure equalization, and protects against the ingress of water, dust, or other harmful particulates. 

These 100% PFOA- free hydrophobic and oleophobic- treated membrane vents can be incorporated via manual or automated assembly in various standard and customizable sizes with different membrane properties. OxyPad® is available using both unlaminated UNIQUE-MEM® and laminated ROTRAC® membrane technologies. 

Oxypad self-adhesive membrane pad  With and Without Lamination
OxyPad® self-adhesive membrane pads are available in both standard and customizable sizes with different membrane properties, including unlaminated, laminated and fiber-based.
  • 100% Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
  • Precisely defined pore-size and pore-density for unmatched airflow and WEP stability ​
  • Various adhesives available
  • Smooth surface properties for excellent liquid repellency​
  • Space-saving assembly ​
  • Wide variety of customizable design options​
  • Easily integrated into automatic assembly processes​
  • Available with backing for increased mechanical stress resistance
  • High temperature stability
  • High resistance towards pressure changes

Self-Adhesive Pad With and Without Lamination

oxypad membrane Oxypad membrane 5mm Oxypad membrane 7mm Oxypad membrane 8mm Oxypad membrane 10mm Oxypad 14mm
Outer Diameter [mm] 5 7 8 10 14
Free Membrane Diameter [mm] 2 3 4 5.5 8
  • PET (hydrophilic and hydrophobic)
  • Polycarbonate (PC)
  • Alternative membrane materials available on demand
Specification Unique-Mem® Track-Etched Membranes RoTrac® Track-Etched Membranes
Bandwidth (mm)
10, 13, 14.5, 20 & custom sizes
High Quality Raw Materials
PET – naturally slightly hydrophilic
PC – naturally slightly hydrophobic
PET-Membrane/ PET-Nonwoven –harder
PET-Membrane/ PP-Nonwoven – softer
Pore Size Ranges
0.1µm to 10µm
0.2µm to 3.0µm
Pore Density Ranges
105 to 109 pores per cm2
2×106 bis 3×108 pores per cm2
Thickness Ranges
8µm to 50µm
90µm to 220µm
Temperature Ranges
– 40°C and 160°C (for special application < 200°C)
– 40°C and 130°C (for special application < 160°C)
Air Flow Ranges
Up to 800 l / (bar cm2 min)
Up to 37 l / (bar cm2 min)
Hydrophilic Treatments
Various hydrophilic treatments increase water flow rate and wetting abilities of the membrane (example: PVP treatment)
Hydrophobic / Oleophobic Treatment:
Grade up to 7.5; AATCC TM 118
Salt spray resistance test2
According to IEC 60068-2-52, based on validation by the customer
Temperature resistance test1
In accordance with ISO 16750-4
Ice water shock test1&2
In accordance with ISO 16750-4
Climate resistance test
In accordance with ISO 16750-4
Chemical resistance test1
According LV124/ ISO 16750-5
IP Protection1
IP 64/65/66/67/68, according to DIN 40050

1 Testing in Progress

2 Based on Customer Validation
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Highlighted Case Study

Advanced Driver Assistance System (ADAS) Venting

Advanced Driver Assistance System (ADAS) Venting

A manufacturer of automotive sensor components came to Oxyphen to develop and design a hydrophobic membrane venting solution specific to their automotive application that would provide protection, airflow to maintain adequate pressure compensation during normal operation, and be easy to assemble.

Related Resources

OxyPad® Product Brochure

Learn more about OxyPad® 100% PFOA-free hydrophobic and oleophobic-treated self-adhesive pads that provide consistent pressure equalization to reduce seal stress, minimize condensation, and protect the housing.

EV Battery Safety Vents Application Brochure

Learn more about Oxyphen’s hydrophobic all-in-one solution that protects critical internal components from the ingress of liquid, dust, dirt, and other contaminants while also having the ability to burst at predefined overpressures to prevent potential explosions from taking place in the event of thermal runaway.

Automotive Lighting Application Brochure

Learn more about Oxyphen’s ultra-hydrophobic fiber-based membrane vents that provide a high airflow while also preventing liquid, fine dust and particles, and humidity from entering the lighting system.

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Delivering Precision & Control: An Introduction to Track-Etched Membrane Technology

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Membrane Technologies Available

Unique-Mem track-etched membranes


Unique-Mem® Unlaminated Track-Etched Membranes

Unique-Mem® track-etched membranes, available as hydrophilic or hydrophobic, are characterized by cylindrical shaped pores penetrating the membrane in different angles. They have a smooth flat surface and well-defined flow rates.​.

RoTrack Track-etched Membrane


RoTrac® Laminated Track-Etched Membranes

RoTrac® track-etched membranes are Unique-Mem® membranes that are supported with non-wovens (PP or PET) to create a more robust membrane. They are available as either hydrophilic or hydrophobic membranes.

Fiber-Based track-etched membranes


Fiber-Based Membranes

Fiber-based membranes are surface modified using a super-hydrophobic coating to repel water and other liquids while still allowing maximum airflow.

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