Battery & Fuel Cell
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Technology and know-how to make your product safer and more reliable.
Porex has been helping battery manufacturers improve their products for over 50 years. From the humble flame arrestor used in every lead-acid battery, to critical safety relief vents used in modern electric vehicles, Porex has the technology and know-how to make your product safer and more reliable.
Our broad portfolio includes:
Lead-acid Battery Vents
Global leader in lead-acid battery vents
EV and Fuel Cell Vents
Protect battery packs and fuel cells
Separators & Isolators
Isolate components within batteries and fuel cells
Global leader in lead-acid battery vents
As the largest global supplier of battery vents, Porex offers a wide range of standard products and other options to support battery technology at facilities across the globe.
POREX® lead-acid battery vents are critical for batteries to function efficiently. Specifically designed to improve the safety of automobiles, our lead-acid battery vents:
| Rectangular Vents | Thickness | Width | Length | |||
|---|---|---|---|---|---|---|
| Item # | Inches | mm | Inches | mm | Inches | mm |
| XA-5019 | 0.106″ – 0.120″ | 2.70 – 3.06 | 0.228″ – 0.244″ | 5.80 – 6.20 | 0.935″ – 0.955″ | 23.75 – 24.25 |
| XA-5020 | 0.108″ – 0.120″ | 2.75 – 3.06 | 0.228″ – 0.244 | 5.80 – 6.20 | 1.171″ – 1.191″ | 29.75 – 30.25 |
| XS-7499 | 0.122″ – 0.130″ | 3.10 – 3.30 | 0.378″ – 0.394″ | 9.60 – 10.00 | 0.612″ – 0.630″ | 15.55 – 16.00 |
| XA-5001-3 | 0.128″ – 0.148″ | 3.25 – 3.75 | 0.535″ – 0.559″ | 13.60 – 14.20 | 0.524″ – 0.547″ | 13.30 – 13.90 |
| Round Vents | Diameter | Thickness | ||
|---|---|---|---|---|
| Item # | Inches | mm | Inches | mm |
| XA-5008-1 | 0.229″ – 0.243″ | 5.82 – 6.18 | 0.110″ – 0.126″ | 2.80 – 3.20 |
| XA-6404 | 0.384″ – 0.404″ | 9.75 – 10.25 | 0.148″ – 0.167 | 3.75 – 4.25 |
| XS-9017 | 0.390″ – 0.398″ | 9.90 – 10.10 | 0.148″ – 0.167″ | 3.75 – 4.25 |
| XA-5027 | 0.390″ – 0.398″ | 9.90 – 10.10 | 0.150″ – 0.165″ | 3.80 – 4.20 |
| XA-5666 | 0.394″ – 0.409″ | 10.00 – 10.40 | 0.110″ – 0.130″ | 2.79 – 3.31 |
| A-5914 | 0.451″ – 0.465″ | 11.45 – 11.81 | 0.147″ – 0.171″ | 3.74 – 4.34 |
| 7682 | 0.451″ – 0.465″ | 11.46 – 11.81 | 0.147″ – 0.171″ | 3.73 – 4.34 |
| XA-5029 | 0.461″ – 0.476″ | 11.70 – 12.10 | 0.157″ – 0.181″ | 4.00 – 4.60 |
| 41023 | 0.484″ – 0.503″ | 12.29 – 12.78 | 0.142″ – 0.162″ | 3.61 – 4.11 |
| XA-5615 | 0.485″ – 0.502″ | 12.32 – 12.74 | 0.142″ – 0.162″ | 3.61 – 4.11 |
| XA-5612 | 0.489″ – 0.503″ | 12.42 – 12.78 | 0.120″ – 0.130″ | 3.05 – 3.31 |
| 40003 | 0.489″ – 0.503″ | 12.78 – 12.42 | 0.120″ – 0.130″ | 3.05 – 3.30 |
| XA-9402 | 0.492″ – 0.508″ | 12.50 – 12.90 | 0.118″ – 0.142″ | 3.00 – 3.60 |
| 41097 | 0.497″ – 0.508″ | 12.62 – 12.90 | 0.110″ – 0.122″ | 2.79 – 3.10 |
| XA-5679 | 0.505″ – 0.519″ | 12.82 – 13.18 | 0.120″ – 0.130″ | 3.05 – 3.30 |
| XS-8088 | 0.505″ – 0.519″ | 12.82 – 13.18 | 0.120″ – 0.130″ | 3.05 – 3.31 |
| XA-5514 | 0.565″ – 0.585″ | 14.35 – 14.85 | 0.112″ – 0.131″ | 2.85 – 3.35 |
| XS-56751 | 0.618″ – 0.634″ | 15.70 – 16.10 | 0.140″ – 0.159″ | 3.55 – 4.05 |
| XA-5896 | 0.630″ – 0.644″ | 15.98 – 16.38 | 0.140″ – 0.160″ | 3.56 – 4.06 |
| XA-5675 | 0.631″ – 0.644″ | 16.04 – 16.36 | 0.140″ – 0.160″ | 3.56 – 4.06 |
| XA-5537 | 0.668″ – 0.682″ | 16.97 – 17.33 | 0.114″ – 0.134″ | 2.90 – 3.40 |
| 5441 | 0.745″ – 0.759″ | 18.92 – 19.28 | 0.125″ – 0.137″ | 3.18 – 3.48 |
| XA-5812 | 0.748″ – 0.752″ | 19.21 – 19.71 | 0.100″ – 0.135″ | 2.55 – 3.43 |
| XS-5793 | 0.781″ – 0.793″ | 19.85 – 20.15 | 0.110″ – 0.126″ | 2.80 – 3.20 |
| XA-5024 | 0.784″ – 0.799″ | 19.90 – 20.30 | 0.144″ – 0.171″ | 3.65 – 4.35 |
| XA-6022-1 | 0.839″ – 0.854″ | 21.30 – 21.70 | 0.051″ – 0.067″ | 1.30 – 1.70 |
| XA-5009 | 0.880″ – 0.900″ | 22.36 – 22.86 | 0.149″ – 0.173″ | 3.79 – 4.39 |
Related Resources:
Datasheet: POREX Battery Vents
Protect battery packs and fuel cells
Protect your battery packs and fuel cells with high performance POREX® protection vents. Designed with the robust POREX Virtek™ PTFE sintered structure, our vents allow pressure equalization or in case of a failure, rapid release of gases while keeping dust and moisture out of the enclosure.
Specifically designed for battery packs and fuels cells, our vents:
Related Resources:
Datasheet: POREX Virtek™ IP-Rated Protection Vents
Demonstration video: Hydrophobicity and handling properties: POREX Virtek™ PTFE vs. expanded PTFE
Demonstration video: Durability Comparison: POREX Virtek™ PTFE vs. expanded PTFE
Demonstration video: Dangers of not venting a sealed enclosure
Demonstration video: Keep electronics dry and protected with POREX Virtek™ PTFE vents
Demonstration Video: Demonstration Video: Comparison of PTFE for use in a Breather / Rupture Disk Combination Device
Isolate components within batteries and fuel cells
Components within batteries and fuel cells need separation to function properly. That’s why our teams have developed custom-molded porous components – including sintered particles, PTFE membrane and porous fiber products – designed to isolate or separate components within these products.
Specifically designed to separate components in batteries and fuel cells, our materials:
Materials Offered
Formats Available