Vented Liners / Seals / Wads

Vented seals, liners, or wads are placed inside the cap of a bottle or container and sealed using induction technology. Once applied, they bond tightly to the neck of the container. These vented liners are available in different diameters to match a variety of container openings.

Induction Sealed Liners | For 0.1L – 1L Bottles

Premium induction & EPE liners with PTFE breathable membrane
Zero-leakage design for maximum safety
Custom sizes available for HDPE, PET & glass bottles

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Advanced Pressure Equalization with Leak-Proof Protection

Zeal Impex manufactures high-performance Vented Liners, Seals, and Wads that combine reliable container sealing with continuous pressure equalization. Designed with a premium ePTFE breathable membrane, these liners allow gases to move in and out of the container while preventing liquid leakage, moisture, dust, and other contaminants from entering.

Our vented liners are ideal for products that release gases during storage or transportation, helping maintain package integrity and ensuring safe handling across the supply chain.

How Vented Liners Work

The integrated microporous ePTFE membrane provides bi-directional airflow, allowing internal pressure to equalize naturally without compromising the seal. This technology protects containers from swelling, paneling, deformation, or collapse caused by:

Chemical off-gassing
Temperature fluctuations
Altitude changes during transportation
Vacuum or pressure build-up

Key Features

Premium ePTFE breathable membrane
Continuous bi-directional pressure equalization
Excellent leak resistance
Hydrophobic & oleophobic membrane technology
Compatible with HDPE, PET, PP, and other plastic containers
Suitable for induction sealing applications
Protects against container distortion and package failure
Available in multiple diameters and custom sizes

Benefits

Preventing container swelling and vacuum collapse
Reducing leakage during shipping and storage
Protecting product quality and shelf life
Improving packaging reliability
Supporting safer transportation of volatile and reactive liquids
Minimizing product loss and customer complaints

Available Options

Induction Vented Liners
Foam Vented Liners
Vented Seals
Vented Wads
Custom Die-Cut Sizes
Custom Airflow Ratings
OEM Packaging Solutions

Related products

Vented Push Fit Plugs

Vented push-fit plugs are designed to be pressed into a small groove inside the cap of a container, bottle, or jerrycan. These plugs use a special PTFE membrane that lets air flow in and out while stopping leaks and keeping the contents safe from contamination.

Vented Inner Plugs

Vented inner plugs are fitted by pressing them into the neck of bottles, containers, or jerry cans. They come in different sizes, from 19 mm to 50 mm in diameter. Each plug has a PTFE membrane that lets air move in and out but stops leaks and keeps the contents protected from contamination.

Vented Bungs

Vented bungs are used in 200L drums and barrels to provide a secure leak-proof seal. Vented bungs allow only air to pass through, which helps keep the container's pressure equalized and prevents contamination.