Packaging Vents

Containers that stay strong and “breathe easy” with high-quality pressure vents

Packaging vents equalize pressure to prevent distortion or damage

Multiple complications can arise when industrial containers are processed, transported, and stored. Packaging can become bloated, collapse or even explode due to unequal pressure.

Our weldable, breathable, leak-resistant material is an ideal solution for pressure vents for many types of industrial containers. Engineered to exact closure specifications, our packaging/container vents feature POREX Virtek® material, which enables a constant controlled vent rate while retaining and safeguarding container contents. Container manufacturers trust POREX® vents to enable their containers to “breathe,” thereby equalizing pressure to prevent distortion or damage.

POREX Virtek vent material addresses industrial packaging requirements to allow container integrity throughout the transportation and storage process. Designed for use with solvent or water-based solutions; granular or powder chemicals; foods or beverages, and low surface tension fluids such as oils, detergents, and surfactants, our cap and closure vents.


Options for customizing packaging and cap vents

Key Features & Benefits

  • Protect container integrity – Prevent pressure change complications through the transportation and storage process with a breathable, leak-free solution.
  • Secure containers – POREX Virtek material has excellent strength properties, which enable weldable or press-fit assembly, providing manufacturing flexibility and convenience.
  • Maximize container performance – Engineered high airflow provides consistent pressure equalization with superior leak resistance.
  • Ensure safety with gas transfer capability in both directions based on pressure equalization needs.

Material Performance
Product # Material Water Intrusion Pressure (mbar)
(l/hr/cm2 @ 10 mbar)
Thickness (mm)
96193 PE 150 14 0.7
9619 PE 150 10 1.5
9948 PE 180 7 3.1
PM3V PTFE 400 9 0.18
PM22S PTFE 525 8 0.25
PM6M PTFE 770 3 0.1

Material Properties
Properties PTFE* PP PE
Heat Resistance (softening point) 260°C 172°C 130°C
Heat Resistance (melting point) >260°C 193°C 160°C
Hydrophobicity Excellent Good Good
Oleophobicity Available upon request N/A N/A
Geometry Sheet/vent plug/disc Sheet/vent plug Sheet/vent plug
*PTFE compliant with UN Dangerous Goods Packaging Performance Standard:

Part 6.1.5 of Chapter 6.1 of the United Nations Model Regulations, 15th Edition

POREX® Cap Closure Vents
Product Description
PM22SR 330mm Roll
PM22STR Oleo 330mm Roll
PM22SDC 16mm Disc
PM22STDC Oleo 16mm Disc

Nominal PM22SR AirFlow Values

Porous Laboratory Components

Watch our On-Demand Webinar

Using Porous Polymers for Venting

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