The breathable gaskets are divided into two types: aluminum foil breathable sealing gaskets and foamed breathable gaskets.

Breathability induction seal liner is composed of PE foam liner, aluminum foil and macro-molecule breathabiliy film. The function is 100% breathable and non leakage. it is sealing through induction sealing machine. 
Breathable liner is developing to prevent the container cap deformation or crack. When the liquid in the filling container (bottle) in sloshing state, or placed at different temperatures to produce gas.
Width is 26cm, thickness is 0.7mm. According to Customers' requirements to cut size.
Applicable scope: PE bottle, PP bottle, PET bottle.
Breathability EPE foam liner is composed of PE foam liner and macro-molecule breathability film. The function is can breathable and non leakage. 
Breathable liner is developing to prevent the container cap deformation or crack. When the liquid in the filling container (bottle) in sloshing state, or placed at different temperatures to produce gas.
Width is 24.5cm, thickness is 1.0mm and 1.5mm. According to Customers' requirements to cut size.
Applicable scope: All kind bottle.

Wanqi is a professional vented liner supplier specializing in high-quality vented liners and breathable seal liner solutions for bottles, jars and containers. Our vented liners provide controlled air exchange while maintaining reliable sealing performance, making them ideal for packaging applications that require pressure balance and leakage prevention.

With advanced manufacturing technology and customized production capabilities, Wanqi supplies durable vented liners for chemical, pharmaceutical, food, beverage and industrial packaging industries. We support OEM customization, bulk orders and tailored sealing solutions.

Professional Vented Liner Supplier

As an experienced vented liner supplier, Wanqi provides reliable Cap Liner products designed to meet different packaging requirements.

Our vented liners offer:

● Controlled gas release and pressure balance
● Breathable sealing performance
● Reduced risk of container deformation or leakage
● Good chemical resistance and durability
● Custom sizes, materials and structures available

What Is a Vented Liner?

A vented liner is a special type of bottle sealing liner designed with breathable properties. Unlike standard sealing liners, a breathable seal liner allows air or gas to pass through while preventing liquid leakage and external contamination.

This makes vented liners suitable for products that may generate internal pressure changes during storage, transportation or temperature variations.

Features of Breathable Seal Liners

Wanqi's breathable seal liners are designed for applications requiring both sealing protection and ventilation performance.

Key features include:

● Gas permeable structure for pressure equalization
● Reliable liquid sealing performance
● Compatibility with various bottle and cap materials
● Protection against dust and contaminants
● Suitable for long-term storage and transportation

Types of Vented Liners We Supply

PE Foam Vented Liners

PE foam vented liners combine lightweight foam structure with breathable sealing performance. They are commonly used for bottles requiring pressure release and product protection.

Applications:
● Chemical containers
● Cleaning product bottles
● Industrial packaging
● Specialty liquid products

Grooved Surface Breathable Seal Liners

Grooved surface breathable seal liners improve ventilation efficiency while maintaining stable sealing performance.

Advantages:
● Enhanced air circulation
● Reliable bottle closure
● Suitable for pressure-sensitive products
● Custom designs available

Custom Vented Liner Solutions

Wanqi provides customized vented liner solutions according to your container design and product requirements.

Applications of Vented Liners

Our vented liners are widely used in various industries:

Chemical Packaging

Used for cleaning agents, agricultural chemicals and industrial liquids that may produce gas or pressure changes.

Pharmaceutical Packaging

Suitable for healthcare products requiring controlled ventilation and reliable sealing.

Food & Beverage Packaging

Used for selected food products where pressure balance and freshness protection are required.

Industrial Packaging

Provides breathable sealing solutions for specialty containers and liquid products.

Why Choose Wanqi Vented Liners?

● Professional vented liner supplier with manufacturing experience
● Custom breathable seal liner solutions available
● Stable production capacity for bulk orders
● Wide range of sealing liner materials
● OEM and ODM support
● Reliable quality control and consistent performance

Frequently Asked Questions

What is a vented liner?

A vented liner is a breathable sealing liner that allows controlled gas exchange while preventing liquid leakage and contamination.

What is the difference between a vented liner and a standard seal liner?

A standard seal liner focuses on sealing and leak prevention, while a vented liner additionally provides pressure release and ventilation functions.

What products need breathable seal liners?

Breathable seal liners are commonly used for chemical products, cleaning liquids, industrial materials and other products that may create internal pressure.

Can you customize vented liners?

Yes. Wanqi provides custom vented liner solutions with customized sizes, materials, structures and performance requirements.

Contact Wanqi for Vented Liner Solutions

Wanqi supplies high-quality vented liners for global packaging applications. Contact us for customized solutions, OEM manufacturing and bulk supply support.