Products

Lead-Acid Battery Vents

High-efficiency, cost-effective flame arrestor for automotive batteries

Porex Lead-Acid Battery Vents Improve Automobile Safety

In 1974, Porex introduced the very first porous plastic vent designed and engineered for use as a flame arrestor for lead-acid batteries. Since then, Porex has produced billions of porous plastic vents supplied to battery manufacturers globally.

POREX® Battery Vents are utilized as single and multiple component flame arrestors and designed to provide a durable, cost-effective venting solution that meets the technical and performance requirements of commercial lead-acid batteries. In addition to preventing sparks from entering the battery, POREX® Battery Vents provide controlled airflow, venting, and optimized back pressure reducing the risk of acid spillage and aerosol emissions.

The battery vents can be assembled using heat staking or ultrasonic welding techniques, making them easy to use in high-volume automated assembly lines.

Round Vents
Rectangular Vents

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

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

In addition to standard items, products may be customized to meet specific geometrical and performance requirements, including high temperature performance, custom air-flows, custom materials and dimensions.

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