Protect and enhance sensor performance with cutting-edge technology
Manufacturers across the world trust Porex for cutting-edge technology that outperforms the competition. The usage of POREX materials maximizes the performance for many sensor applications, including gas absorption, effective venting, precise diffusion, electrolyte holding and wicking, catalyst support, and reflective media.
Our customizable solutions for sensor manufacturers can be tailored to specific applications or devices – and seamlessly integrated with many manufacturing processes.
Our products:
- Protects the sensor from moisture and dust while allowing fast gas diffusion.
- Contain safe materials, eliminating the use of materials that can cause skin irritations or inhalation hazards.
- Meet your specific application needs and can be customized to various shapes and sizes.
Gas-Absorption Filters
Minimize false readings or premature degradation
Protection Vents and Diffusion Layer
Equalize pressure and repel contaminants
Electrolyte Reservoirs and Wicks
Safely facilitate electrolyte chemical reactions
Catalyst Carriers
Consistent performance with minimal shrinkage
Reflective Materials
Optimize your reflective media options
Gas-Absorption Filters
Minimize false readings or premature degradation
Gas-absorbing filters from Porex target specific gases that may cause a sensor to have a false reading or cause premature degradation of the cell itself.
Specifically designed for your sensor devices, our gas-absorbing filters:
- Are effective at capturing a wide range of gases that can be harmful to your sensor, including H2S, SO2, HMDS, organics, alcohols and many others.
- Absorb larger amounts of the problem gas –Compared to competitive materials, POREX® filters absorb more problem gas per unit volume, lasting longer than competitive products.
- Contain safe materials–POREX filters are constructed with safe-to-use reagents, unlike competitive products with toxic lead-containing components.
Related Resources:
Brochure: Electrochemical Gas Sensor Components
Tech Brief: Overcoming Challenges with Harmful Lead Acetate Filters
Protection Vents and Diffusion Layer
Equalize pressure and repel contaminants
POREX Virtek® IP-rated PTFE vents are designed to provide fast gas diffusion, while repelling dust, water and other contaminants. Specifically designed for electronic devices, our protection vents:
- Deliver fast detection –Allows for faster diffusion of target gases, leading to faster detection.
- Equalize pressure–Reduces pressure build-up and allow heat to escape electronic enclosures, because its air-permeable structure acts as a pressure-relief valve, protecting the enclosure seals from premature failure.
- Protect from contamination–Protects the internal components by repelling water, sweat, oils and other liquids.
- Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
POREX Virtek® PTFE Membrane — Typical Properties
| Item Number | IP Rating † | WEP* Typical mbar | Typical Airflow l/hr/cm² @70mbar | Filtration Efficiency** >99.99% | Thickness mm | Max Operating Temp °C | UL-94/746C | Salt Fog$ |
|---|---|---|---|---|---|---|---|---|
| PMV10 | 64,67 | 270 | 107 | 0.5 µ | 0.13 | 260°C | V-0/f2 | No pen. |
| PMV10L*** | 64,67 | 270 | 85 | 0.5 µ | 0.3 | 100°C | – | No pen. |
| PMV15 | 64,67 | 370 | 75 | 0.4 µ | 0.18 | 260°C | V-0/f2 | No pen. |
| ‡PMV15T | 64,67 | 370 | 75 | 0.4 µ | 0.18 | 260°C | – | No pen. |
| PMV20 | 64,65,68 | 520 | 25 | 0.1 µ | 0.25 | 260°C | V-0/f2 | No pen. |
| PMV25 | 65,67,68 | 765 | 17 | 0.2 µ | 0.1 | 260°C | V-0/f2 | No pen. |
| PMV27 | 65,66,67,68 | 1050 | 7 | 0.1 µ | 0.19 | 260°C | V-0/f2 | No pen. |
† IEC std. 60529; IP 68 is a user defined and results must be verified by the user
*WEP = Water Entry Pressure
** According to IEST RP-CC007.2 2009
$ASTM B117-11 test method
***Laminated polyolefin mesh backing
‡ Oleophobic, AATCC TM 118 – Grade 8 – other membranes can also be treated to meet Grade 8 upon request
Properties are typical and not meant for specifications. Selected options and adhesives may effect properties
RoHS, WEEE, REACH Compliant (PFOA Free)
PRODUCT OFFERING BY MATERIAL SERIES – POREX Virtek® ADHESIVE DISCS
Dimenions (OD x ID in mm)
| Material Series | 5 x 2 mm* | 7 x 3 mm | 10 x 6 mm | 12.7 x 7.1 mm | 20 x 13 mm |
|---|---|---|---|---|---|
| PMV10 | PMV10M | PMV10N | PMV10P | PMV10W | PMV10C |
| PMV10L | PMV10LM | PMV10LN | PMV10LP | PMV10LW | PMV10LC |
| PMV15 | PMV15M | PMV15N | PMV15P | PMV15W | PMV15C |
| PMV20 | PMV20M | PMV20N | PMV20P | PMV20W | PMV20C |
| PMV27 | PMV27M | PMV27N | PMV27P | PMV27W | PMV27C |
| PMA10 | PMA10W# |
Special order items highlighted for higher MOQ. All others are stocked items
3M 93020LE adhesive standard (120 °C continuous use temperature
# Oleophobic treated and high temperature adhesive (good to 150 °C)
M, N, P, W & C are size codes as listed in column heading.
Many other standard and custom sizes available. Contact Porex for more information
POREX Virtek® PTFE Vent Plugs — Typical Properties
| Item Number | Diameter mm (in.) | Thickness mm (in.) | WEP* mbar | IP Rating† | Typical Vent Airflow l/hr @70mbar | Max Operating Temp °C | Filtration Efficiency (99.99%) | UL-94 Rating |
|---|---|---|---|---|---|---|---|---|
| PD103032 | 3.2 (1/8″) | 3 (1/8″) | 450 | 64,67,68 | 1 | 260°C | 0.5 µ | 5VA, f1 |
| PD103063 | 6.3 (1/4″) | 3 (1/8″) | 450 | 64,67,68 | 3.8 | 260°C | 0.5 µ | 5VA, f1 |
*WEP = Water Entry Pressure
† IEC std. 60529; IP 68 is a user defined and results must be verified; product has not been specifically tested – passing is based on results from similar products
Assembly methods include: press fit, over-molding, compression seal, adhesive bonding or flange welding.
Numerous custom and standard options available. Please contact your local Porex sales representative to determine what is available.
Properties are typical and not meant for specifications.
RoHS, WEEE, and REACH Compliant (PFOA Free)
Related Resources:
Brochure: Electrochemical Gas Sensor Components
Brochure: Sensor Components
Demonstration video: Keep electronics dry and protected with POREX Virtek PTFE vents
Demonstration video: Porex Virtek PFOA Free Membrane vs. Cast and Non-woven Membranes
Electrolyte Reservoirs and Wicks
Safely facilitate electrolyte chemical reactions
Electrolyte reservoirs and wicks are needed to retain and deliver an electrochemical system’s electrolyte to facilitate the chemical reaction. POREX® fiber and foam media can be used for reservoirs, general wicking, and supporting of fluids within electronics and sensors.
Engineered for optimal capacity and directional flow, our electrolyte reservoirs and wicks:
- Minimize inhalation and skin hazards–Made from safe-to-use PP or PE, our materials eliminate the need for glass wool, which can cause skin irritations and health issues when inhaled.
- Meet your application specifications–Product fluid retention, density and flow orientation can be tailored to meet your specific application needs.
Related Resources:
Brochure: Electrochemical Gas Sensor Components
Tech Brief: Eliminating Hazardous Glass Wool from Sensor Electrolyte Reservoirs
Demonstration video: Porex Virtek PFOA Free Membrane vs. Cast and Non-woven Membranes
Catalyst Carriers
Consistent performance with minimal shrinkage
POREX Virtek PTFE catalyst carriers form the substrate of electrochemical sensor electrodes. The electrode portion of an electrochemical sensor collects the generated current and is often coated with a paste containing precious metal, such as platinum.
- Available in rolls, sheets or precut shapes.
- Minimal shrinkage during catalyst curing.
- Structure does not change under pressure.
- Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
POREX Virtek® PTFE Materials for Sensors
| Item Number | WEP* mbar | Typical Airflow l/hr/cm2 @70mbar | Thickness (mm) | Filtration Efficiency** >99.99% | Hydrophobic | Typical Application |
|---|---|---|---|---|---|---|
| PMV10 | 270 | 107 | 0.13 | 0.5 μ | Yes | Dust Filter |
| PMV10L*** | 270 | 85 | 0.3 | 0.5 μ | Yes | Dust Filter |
| PMG15 | 370 | 75 | 0.18 | 0.4 μ | Yes | Catalyst Carrier/ Diffusion membrane |
| PMG20 | 765 | 17 | 0.1 | 0.2 μ | Yes | Catalyst Carrier/ Diffusion membrane |
| PMG25 | 1050 | 7 | 0.19 | 0.1 μ | Yes | Catalyst Carrier/ Diffusion membrane |
** According to IEST RP-CC007.2 2009
***Laminated polyolefin mesh backing
Properties are typical and not meant for specifications. Selected options and adhesives may effect properties
RoHS, WEEE, REACH Compliant (PFOA Free)
Related Resources:
Brochure: Electrochemical Gas Sensor Components
Brochure: Sensor Components
Demonstration video: Porex Virtek PFOA Free Membrane vs. Cast and Non-woven Membranes
Reflective Materials
Optimize your reflective media options
Porex provides a portfolio of highly reflective components for optical sensors and other sensors that use or gather light. Our pure POREX Virtek PTFE reflective components have industry-leading UV and visible light reflectivity.
Available in rolls, sheets, die-cut parts, or custom 3-D shapes to meet your application needs, our reflective materials:
- Eliminate hot and dark spots–POREX Virtek PTFE reflects light in all directions, causing the light to be spread evenly across a surface and eliminate hot spots.
- Increase efficiency – With more than 97% average reflectance over the entire light spectrum, our reflective materials capture wasted light and deliver directly to the lighting task.
- High temperature tolerance of up to 260°C
- Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
Related Resources:
Datasheet: LED Reflectors
Datasheet: Porex Virtek PTFE Solutions for Uniform UV and Visible Light Reflectivity
Demonstration video: Porex high efficiency diffuse reflector
Demonstration video: Porex Virtek PFOA Free Membrane vs. Cast and Non-woven Membranes