Chemicals need to breathe. And containers of agricultural chemicals — like liquid fertilizer and pesticides, whose natural variations provoke varying rates of fermentation and gas release — need to be ventilated.

Without the appropriate vents, containers could collapse, bulge or leak when exposed to changes in altitude or temperature. Pallets could collapse. Labels could be ruined and as a result important safety information can be potentially illegible. Consumers could be exposed to leaked chemicals, while manufacturers could experience decreased profits due to lost productivity and unsatisfied customers.

Gore’s packaging vents minimize these risks for even the most highly concentrated chemical formulations, and we provide vents that meet the stringent ADR and DOT standards.


Why Vent?

Because venting is the safe, reliable way to relieve pressure differentials that would otherwise cause containers of liquids to deform, leak or burst.

  • For liquid manufacturers, such defects can reduce productivity and efficiency in palletizing/warehousing. Such defects also hurt profits and brand image, when defective goods are returned...or cannot be sold at all.
  • For cap and container manufacturers, diagnosing and resolving packaging problems can be time-consuming and costly – and can compromise customer satisfaction as well.
  • And all along the supply chain, leaks can create huge risks for end-users and hazards to the environment, as well as costly clean-ups.

GORE® Packaging Vents minimize all these risks. They reliably and continuously equalize pressures, to minimize the potential for leaks and maintain the integrity of containers and their contents.


Releasing and Consuming Gases

Releasing and consuming gases


Some active ingredients “off-gas,” releasing gases within the container. If those gases cannot escape, the container will bloat, leak or even burst. Other active ingredients consume, or “scavenge” oxygen, creating under-pressure that can cause the container to collapse.


Temperature Differences

Temperature differences


Temperature changes, or exposure to different climates, can also deform containers. Rising temperatures expand the gas in the headspace of the container and accelerate the decomposition of reactive chemicals, which can cause over-pressures and bloating. Falling temperatures can cause under-pressures and collapse. Sudden or extreme temperature changes accelerate these deformations.

Altitude Changes

Altitude changes


Altitude changes during transport create pressure differences between the outside and inside of the packaging. Increasing altitude creates over-pressure in the container, leading to bloating. Decreasing altitude creates under-pressure, leading to collapse. Sudden or extreme altitude changes accelerate these deformations.


Dispensing Liquids

Dispensing Liquids


Dispensing liquids creates under-pressure within the container. If this imbalance is not relieved, the container may collapse.



Hazardous Chemicals and Institutional Cleaners

The UN Orange Book recommends that if a dangerous good is vented, no leakages are allowed. Packaging engineers must address these challenges to maintain package integrity throughout the whole product life cycle.

These chemicals require venting according to the UN Orange Book:

  • Chlorine bleach: UN 1791
  • Hydrogen peroxides:
    UN 2014, UN 2015, UN 2984
  • Hydrogen peroxide and peracetic acid mixtures:
    UN 3149
  • Organic peroxides:
    UN 3109, UN 3110, UN 3119, UN 3120




The UN Orange Book recommends venting for any formulation that could cause package deformation. Highly-concentrated pesticides or fertilizers produce higher levels of off-gassing or oxygen-scavenging. Venting protects their packaging from deformation, leaks and label damage.

Examples of agrochemicals that require venting:

  • Organic/inorganic fertilizers
  • Pesticides
  • Biostimulants
  • Gardening liquids



Household Chemicals

Venting is increasingly required for household chemicals – not only for today‘s more highly-concentrated formulations, but also because today‘s customers reject deformed, leaky or label-damaged packages. Reliable venting solutions are the key to successful packaging and satisfied customers.

Applications that typically vent for pressure equalization:

  • Carpet cleaners
  • Laundry stain removers
  • Pipe clog removers
  • Surface cleaners containing bleach and chlorine
  • Anti-calc-cleaners


Household Chemicals

Why Gore?

When you seek solutions for packaging that bloats, collapses or leaks, there are compelling reasons to make Gore your preferred partner:

Membrane Technology Leadership
  • We invented the first ePTFE membrane, and have continued to develop and patent numerous advanced membrane technologies.
  • Unlike competitors who purchase their membranes, we use only GORE™ Membranes: those that are designed and manufactured by Gore.
  • Our proprietary processes convert “plain” PTFE to ePTFE, and then further tailor the ePTFE to achieve various different characteristics for specific application needs.
Membrane Technology Leadership
Chemical Expertise
  • We have developed an advanced level of expertise in chemicals that require venting due to off-gassing or oxygen scavenging.
  • Our research and development teams have conducted in-depth investigations into the ways fluid viscosity and surface tension affect venting performance.
  • We also developed proprietary testing procedures for “Residual Airflow” and “Liquid Entry Pressure,” to assess venting response to real-world conditions.
Chemical Expertise
Quality Assurance
  • We conduct in-line airflow, in-line camera, and Water Entry Pressure tests, to ensure the consistent quality and reliability of our Packaging Vents.
  • We laser-mark most Plug-In Vents with an individual tracking code that links to actual production data and certain in-process performance characteristics. If there is ever an issue, we can retrieve this data at any time, for troubleshooting.
  • Our vents meet strict performance requirements. They pass rigorous approval tests for dangerous goods, and meet DOT and ADR standards.
Quality Assurance
Global Resources and Support
  • We offer worldwide application engineering support, including extensive testing facilities (if needed), to help find the most appropriate venting solution – or to assist with troubleshooting in case of an emergency.
  • Our global network of sales representatives makes purchasing fast, easy and convenient.
  • Our manufacturing facilities in the US, Germany and Japan provide dedicated centers of excellence for specific product families.
Global Resources and Support
  • We have more than 20 years’ experience in packaging applications including hazardous chemicals, agrochemicals, institutional cleaners and household chemicals.
  • Our products are trusted by every leading chemical formulation company as well as cap and container manufacturers worldwide. Collectively, they have installed hundreds of millions of GORE® Packaging Vents!

Product Comparison

Plug-In Vents

Gore’s Plug-In Vents can easily be installed via press-fit or snap-fit. Available for container sizes from 0.2 to 1,500 liters, they can be integrated into the closures of industrial drums, jerry cans and IBCs as well as consumer containers. Plug-In Vents are designed to withstand harsh chemicals and rugged use. They consistently demonstrate compliance with the UN Orange Book test standards, including the stacking test and drop test.

D18, D17, D15

D38 / D17 / D15:
Our most robust, reliable vents for the most aggressive industrial chemicals and “dangerous goods” packaging. Optimized for ADR Drop Test Specifications.

D15 Converse

D15 Converse:
For cartridges or other packaging that require exterior vent integration. Ideal for dosing/dispensing applications.

D10, D6

D10 / D6:
A high-performance, small-footprint vent designed to enhance safety, sustainability and savings in applications like dispensers for household or institutional cleaners.


Equalizes pressure ONLY from the outside to the inside, for specialty applications including the smallest cartridges/dispensers that don’t off-gas, but need pressure-balancing for product flow.

For complete details, please download our new GORE Packaging Vents Portfolio Data Sheet.



Liners are the easy way to transform an existing non-vented package into a well-vented package – without modifying your existing cap or closure. All liners are available in single- and multi-up roll goods, as well as in various widths. Cut parts can also be offered. Gore offers two styles of Liners: Foam Liners and Pulp Induction Liners.

New Foam Liner NEW Foam Liners:
Two Series, with full-surface membranes, for all flat-cap designs. Easy drop-in replacements for all single-point or unvented liners, in applications from consumer chemicals to DOT and ADR-regulated packaging.
Pulp Induction Liner Pulp Induction Liners:
Two Series, for agrochemical bottles (up to 5 l). Weldable installation ensures tamper-evidence; membrane construction provides needed breathability for gas-scavenging chemicals and off-gassing liquids.


For complete details, please download our new GORE Packaging Vents Portfolio Data Sheet.


Two NEW foam liners

New GORE foam liner: high roll-off series

New GORE foam liner: high roll-off series

Unprecedent performance for your most extreme challenges.

Learn more

New Gore foam liner: standard series

New Gore foam liner: standard series

A versatile solution for your "everyday" challenges.

Learn more



Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations.