Batteries

Optimize your energy storage and generation products.

Safer energy storage with porous safety vents

Optimize your energy storage and generation products by utilizing Porex porous components. With our unique and durable POREX® Virtek™ microporous PTFE membrane, the vent allows for general pressure compensation under normal use, and allows gases to escape rapidly in the event of product failure.

With a wide range of porous material technologies for various energy applications, Porex provides products such as membranes for separation of active portions of batteries, fuel cells, flow cells, and capacitors, fluid wicks and electrolyte support media to help keep your battery systems running smoothly.

Our safety vents for energy storage products:

  • Can be customized to your application’s specific needs, including size and shape.
  • Protect systems with versatile and optimized materials including POREX Virtek™ PTFE, sintered porous plastic, and breathable porous fiber.
Battery Protection Vents

Battery Protection Vents

Protect your battery systems with easy-to-attach vents

Separator materials

Separator Materials

Customizable porous materials meet your battery specifications

Fluid Reservoir & Wicks

Fluid Reservoirs and Wicks

Control and retain fluids within energy storage devices

Battery Protection Vents

Battery Protection Vents

Protect your battery systems with easy-to-attach vents

As a leader in providing protection vents for batteries and battery systems, Porex offers a wide range of products - from standard sizes of adhesive protection vents, to finished vents within a housing that keeps batteries safe.  

Available in a variety of materials, our protection vents:

  • Attach easily to the battery system –Robust POREX Virtek™ PTFE structure can be attached using several manufacturing processes - including ultrasonic welding - and the membrane can also be mounted into an enclosure device for easy attachment.
  • Are customizable with many material options including POREX Virtek™ PTFE, sintered particle polymer, breathable porous fiber

 

 

POREX® Virtek™ PTFE Membrane Application Materials — Typical Properties
Application Material IP Rating † WEP mbar Airflow l/hr/cm² @70mbar Filtration Efficiency** >99.99% Thickness mm Max Operating Temp °C UL-94/746C* Salt Fog
PMV10 64,67 270 125 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 64,67 380 70 0.4 µ 0.18 260°C V-0/f2 No pen.
‡PMV15T 64,67 380 70 0.4 µ 0.18 260°C - No pen.
PMV20 64,65,68 520 34 0.1 µ 0.25 260°C V-0/f2 No pen.
PMV25 65,67,68 750 15 0.2 µ 0.1 260°C V-0/f2 No pen.
PMV30 65,66,67,68 1000 4.5 0.1 µ 0.25 260°C V-0/f2 No pen.
WEP = Water Entry Pressure
RoHS, WEEE, REACH Compliant
** According to IEST RP-CC007.2 2009
***Laminated polyolefin mesh backing
† IEC std. 60529, IP 68 is a user defined test; will pass condition dependent
‡ Oleophobic Grade 8, AATCC TM 118
Properties are typical and not meant for specifications.
Properties for membrane only, selected options and adhesives may affect properties.
Testing results available upon request

 

STOCK PRODUCT OFFERING - ADHESIVE DISCS
Dimensions Material Series
OD/ID (mm)* PMV10L PMV15 PMV20 PMV30
7.0/3.0 (N) PMV10LN PMV15N PMV20N PMV30N
10.0/7.0 (I) PMV10LI PMV15I PMV20I PMV30I
12.7/7.1 (W) PMV10LW PMV15W PMV20W PMV30W
20.0/13.0 (C) PMV10LC PMV15C PMV20C PMV30C

 

Dimensions Material Series
OD/ID (mm)* PMV15 Feature
12.7/7.1 (W) PMV15WH High temperature adhesive
12.7/7.1 (W) PMV15TWH Oleophobic with high temp adhesive
*1000 discs/roll
N, I, W & C are size codes.
Many other standard and custom sizes available. Contact Porex.

 

POREX® Virtek™ PTFE Vent Plugs — Typical Properties
Part # Diameter mm Thickness mm WEP mbar IP Rating † Vent Airflow l/hr/cm² @70mbar Max Operating Temp °C UL-94 Rating
PD103032 3.2 3 450 64,67,68 1 260°C 5VA, f1
Plugs meet UL-94 5VA and F1 rating.
Assembly methods include: press fit, over-moulding, compression seal, or flange welding.

 

Adhesive Vent Available Sizes
Available Sizes
OD (in mm) ID (in mm)
7 3
10 7
10.2 6.5
11 7
12.7 7.1
13 10
14.8 11
14.8 7
15.8 9
16 11
18 13
18.6 10.6
19.1 11.5
20 13
25.4 19
50 30
   

*Highlighted rows indicate stock items.

Custom sizes available upon request

 

Related Resources:

pdf download Datasheet: POREX Virtek™ IP Rated Protection Vents

pdf download Datasheet: PTFE Fact Sheet

pdf download Datasheet: Porex PTFE Ingress Protection Test Report

video Demonstration video: Hydrophobicity and handling properties: POREX Virtek™ PTFE vs. expanded PTFE

video Demonstration video: Durability comparison of POREX Virtek™ PTFE vs. expanded PTFE

video Demonstration video: Dangers of not venting a sealed enclosure

video Demonstration video: Keep electronics dry and protected with POREX Virtek™ PTFE vents

 

Separator Materials

separator materials detail

Customizable porous materials meet your battery specifications

Separation materials from Porex can be used in batteries, fuel cells, flow cells and capacitors, and are available in POREX Virtek™ PTFE and various other materials.  Their uniform porous structure combined with customizable pore volume and pore size ensure that the separator materials meet your battery’s specifications.

 

 

POREX® Virtek™ PTFE Membrane Application Materials — Typical Properties
Application Material IP Rating † WEP mbar Airflow l/hr/cm² @70mbar Filtration Efficiency** >99.99% Thickness mm Max Operating Temp °C UL-94/746C* Salt Fog
PMV10 64,67 270 125 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 64,67 380 70 0.4 µ 0.18 260°C V-0/f2 No pen.
‡PMV15T 64,67 380 70 0.4 µ 0.18 260°C - No pen.
PMV20 64,65,68 520 34 0.1 µ 0.25 260°C V-0/f2 No pen.
PMV25 65,67,68 750 15 0.2 µ 0.1 260°C V-0/f2 No pen.
PMV30 65,66,67,68 1000 4.5 0.1 µ 0.25 260°C V-0/f2 No pen.
WEP = Water Entry Pressure
RoHS, WEEE, REACH Compliant
** According to IEST RP-CC007.2 2009
***Laminated polyolefin mesh backing
† IEC std. 60529, IP 68 is a user defined test; will pass condition dependent
‡ Oleophobic Grade 8, AATCC TM 118
Properties are typical and not meant for specifications.
Properties for membrane only, selected options and adhesives may affect properties.
Testing results available upon request

 

POREX® Virtek™ PTFE Vent Plugs — Typical Properties
Part # Diameter mm Thickness mm WEP mbar IP Rating † Vent Airflow l/hr/cm² @70mbar Max Operating Temp °C UL-94 Rating
PD103032 3.2 3 450 64,67,68 1 260°C 5VA, f1
Plugs meet UL-94 5VA and F1 rating.
Assembly methods include: press fit, over-moulding, compression seal, or flange welding.
Fluid Reservoir & Wicks

Fluid Reservoirs and Wicks

Control and retain fluids within energy storage devices

Our POREX® porous fiber media functions as an electrolyte reservoir that retains and can control and dispense fluids used in energy storage devices.

These reservoirs and wicks:

  • Have very consistent densities and fluid transport capabilities
  • Are customizable to your specific application
  • Offer self-supporting properties that can be made into sheets or custom shapes and sizes to meet your device’s specific needs

Features

  • Retain and deliver electrolyte fluids in energy storage devices
  • Engineered for optimal density and fluid retention and transport

Materials Offered

  • Porous polymeric fiber
  • Sintered particle 

Formats Available

  • Sheet/roll format or 2D fiber shapes – can be self-supporting
  • Customizable shapes and sizes based on application requirements