What are the technical specifications?

Density is 0.33 + 0.04 g/cc, thickness tolerance is 1.00 + 0.15mm, hardness is Shore A 60, and vent diameter is 5mm or 6mm.

Customs Size Hydrophobic High Airflow PE Foam Vent Seal Liner

Name: Customs Size Hydrophobic High Airflow PE Foam Vent Seal Liner
Brand: Hangzhou Well-Pack Material Co., Ltd.
SKU: 2209441955

Zhejiang, ChinaHangzhou Well-Pack Material Co., Ltd.

US$0.005-0.012

1,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Flip Top Cap

Material

Plastic

Surface

Smooth;Matte

Feature

Impact-Resistant, Heat-Resistant, Cold-Resistant

Sample

Available

Factory

Yes

Thiackness

1-3mm

Transport Package

Cartoon

Specification

Customized

Origin

Hangzhou

Production Capacity

10000 Piece/Pieces Per Day

Key features

Chemical Resistance: Designed for aggressive chemicals in petrochemical, pharmaceutical, and agrochemical industries.

Venting Mechanism: Allows gas release to prevent bottle blow-up while maintaining a hermetic leak-proof seal.

Customizable Features: Surface can be smooth or matte; features include impact, heat, and cold resistance.

OEM/ODM Service: Supports OEM and ODM services with available samples for client testing.

High Airflow: Valve permeability of 8~9 L/m2.s ensures efficient degassing for fermentation processes.

Material Quality: Made from PE foam with density 0.33 g/cc and hardness Shore A 60 for durability.

Company profile

Hangzhou Well-Pack Material Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2007-02-28 CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤18h CertifiedTerms of Payment: T/T

AI-Powered supplier vetting

SummaryHangzhou Well-Pack Material Co., Ltd. is a China-based manufacturing supplier established in 2006, with 42 employees and a 3,367 m² plant. The company states that its group has more than 40 years of packaging experience and produces materials, semi-finished goods, and finished products using paper, PE, EPE, PP, PET, aluminum foil, and specialty polymers. It operates nine production lines, has 6–10 quality-control staff, and offers products including induction liners, foil seals, peelable liners, and EPE/PE foam. It reports Class 1000 or Class 10000 clean-room production and HACCP certification. The supplier exports 31%–40% of sales, has self-operated import/export rights, and serves Southeast Asia, the Middle East, and Europe. Evidence supports manufacturing breadth, product customization, and export capability, while after-sales service, financial credibility, innovation depth, and documented customer cases remain insufficiently evidenced.

Supplier typeThe supplier is identified as a combined business entity and a factory/manufacturer located in Hangzhou, Zhejiang, China. Its stated manufacturing status and 42-employee operating structure directly support classification as a manufacturing supplier.

CertificationsThe company states that films, sheets, and rolls can be produced in Class 1000 or Class 10000 clean-room environments and that it is HACCP certified. However, its supplier-management-system certification is listed only as “Others,” with no further certification details.

Production capacityThe company reports more than 40 years of group packaging experience, production of base materials through finished products, nine production lines, a 3,367 m² plant, and clean-room manufacturing for films, sheets, and rolls. Its stated material range and product portfolio support broad production capability.

Customization capabilityThe supplier states that it provides one-stop service across multiple materials and product stages, offers custom-made automation solutions, and supplies foil liner rolls in different thicknesses, colors, printing conditions, and applications. These details explicitly support customization capability.

Product Q&A

Q:What industries is this vent seal suitable for?

It is primarily designed for aggressive applications in petrochemical, pharmaceutical, pesticide, herbicide, bleach, and agrochemicals industries.

Q:Does the liner allow gas release?

Yes, it features a designated valve that allows gas built-up to be released, serving as a depressurizing mechanism to prevent bottle collapse or blow-up.

Q:Is customization available for this product?

Yes, the surface can be customized to smooth or matte, and it offers impact, heat, and cold resistance. OEM and ODM services are also available.

Q:What are the packaging options?

It is available as die-cut liners packed loosely, stacked in plastic sleeves, or in plastic bags and carton boxes, with options for printed or unprinted versions.

Q:What is the recommended usage procedure?

Clients should test the product thoroughly on their production line prior to mass production, checking suitability for filling lines, storage conditions, and temperature ranges.