Sealing Zippers
Solutions

Waterproof & airtight zipper applications and sealing solutions

With over 20 years of industry experience, we provide a full range of airtight and waterproof zipper and sealing technologies to ensure reliability in demanding applications.

20+ years in waterproof & airtight applicationsOEM-focused technical supportApplication-based engineering supportVertical integration for stable supply
Quick Selection

Waterproof vs airtight – quick selection guide

Before diving into each industry, this overview shows how typical applications map to our HydroSeal™ waterproof and AeroSeal™ airtight zipper families. Use it as a starting point for discussions between engineering, sourcing and product management.

application overview 1
HydroSeal™ · block liquid water
Application areaTypical productsSealing focus
Outdoor & technical apparelJackets, pants, motorcycle wear, ski gearHigh-frequency flex resistance
Marine & watersports gearDrysuits, life vests, sailing jackets, kayak wearWatertight sealing for immersion
Industrial protective clothingChemical protection suits, cleanroom garments, hazardous environment gearLiquid repellency & durability
application overview 2
AeroSeal™ · hold air pressure
Application areaTypical productsSealing focus
Aerospace & aviation equipmentPilot suits, helicopter crew gear, emergency slidesPressure retention & extreme temp stability
Medical & healthcare devicesPortable isolation units, medical bags, sterile equipment coversHermetic seal for contamination prevention
High-altitude & expedition equipmentSpace simulation suits, high-altitude balloons, arctic exploration suitsLow-temperature flexibility & airtightness
Industries

Application Deep-Dives

Outdoor & technical apparel

Outdoor & technical apparel

Trusted by professionals for long-lasting protection and freedom of movement.

Key sealing challenges

  • Frequent bending and flexing at front zips,pockets and vents. Exposure to rain, snow,wind-driven spray and mud. Lightweight, soft hand-feel required near the body. Easy operation with cold hands or gloves.

Recommended zipper solutions

  • Most outdoor garments can be sealed effectively with HydroSeal waterproof zippers. Reliable IPX5-lPX6 waterproof performance for rain andspray. Flexible tape and smooth operation suitable for jackets andpants. Options for front zips, pockets, vents and pit zips.
Dry diving suits
Dry diving suits
Semi-dry suits
Semi-dry suits
Life vests & buoyancy aids
Life vests & buoyancy aids
Water sports jackets
Water sports jackets
Water sports & diving gear

Water sports & diving gear

Trusted by professionals for immersion and pressure resistance.

Key sealing challenges

  • Long-term exposure to fresh or salt water. Continuous stretching and bending close to the body. Comfort requirements for tight-fitting suits. In some cases, dry inside .conditions even under immersion.

Recommended zipper solutions

  • Choose HydroSeal™ for surface water sports; consider AeroSeal™ where true dry conditions and airtightness are required. HydroSeal™:wetsuits, semi-dry suits, surface sports gear. AeroSeal™: drysuits and systems that must stay dry inside. Configurations for back zips, front zips and relief zippers.
Wetsuits
Wetsuits
Gear & Mesh Bags
Gear & Mesh Bags
Buoyancy Control Devices (BCDs)
Buoyancy Control Devices (BCDs)
Waterproof Duffels
Waterproof Duffels
HAZMAT & medical containment

HAZMAT & medical containment

Designed for airtight containment, chemical resistance and infection control.

Key sealing challenges

  • Risk of chemical/biological aerosol/infectious liquid leakage. The requirements of positive/negative pressure systems on sealing continuity. Mechanical wear from frequent putting on and taking off, as well as during the cleaning process. The effect of different disinfectants (chlorine, alcohol,peroxide) on materials.

Recommended zipper solutions

  • Level A & high-risk Level B protective suits used in chemical response,biological containment and CBRN environments. Medical isolation chambers, patient transport pods,quarantine enclosures and inflatable decontamination tunnels. for welded integration into isolation chambers,transport pods and inflatable decontamination tunnels.
Fully encapsulated HAZMAT suits
Fully encapsulated HAZMAT suits
Decontamination suits and response gear
Decontamination suits and response gear
Surgical and isolation gowns
Surgical and isolation gowns
CBRN Protective Garments
CBRN Protective Garments
In the Field

Applications in the field

These examples illustrate how different industries use ZIZIP™ waterproof and airtight zippers in real products. You can adapt similar concepts to your own projects.

HAZMAT suits

HAZMAT suits

AeroSeal™ airtight zippers help maintain hermetic protection in hazardous decontamination operations.

Medical isolation chambers

Medical isolation chambers

Carefully integrated airtight zippers support controlled access and reliable sealing around patients.

Dry diving suits

Dry diving suits

Zippers are placed where movement and sealing demands intersect, balancing comfort and protection.

Waterproof duffel bags

Waterproof duffel bags

Long HydroSeal™ zippers provide wide openings for packing while keeping gear dry in harsh weather.

Inflatable field tents

Inflatable field tents

AeroSeal™ zippers help manage access while maintaining the airtight shell of the structure.

Industrial covers

Industrial covers

Tailored zipper paths create service access points in protective covers for machinery and marine equipment.

How We Work

How we support your application

We work as a sealing partner, not just a zipper supplier. Our process connects application requirements with the right technical solution and reliable manufacturing.

1. Application analysis

We begin by defining your application requirements, including the sealed medium, operating pressure, target IP or airtightness level, service life, and applicable standards. This ensures clear alignment across engineering, sourcing and quality teams.

2. Zipper selection

Our engineers recommend HydroSeal™ vs AeroSeal™, sizes (#3 / #5 / #8), slider and puller configurations, and integration methods (sewing, welding, lamination) based on your design envelope and end-use environment.

3. Sampling & validation

We support prototypes, test samples and design iterations until sealing performance, ergonomics and durability meet your internal and external test criteria. This can include lab tests, field trials and joint reviews of failure modes.

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4. Mass production

Once the design is validated, our vertically integrated production and quality systems help stabilize performance, lead times and supply for your program – from initial ramp-up through mature volume production.

For Your Team

Application design checklist

Structure your requirements before contacting us.

Sealing & environment

  • Primary function: rain/spray, immersion, airtight or a combination?
  • Target IP rating or pressure and duration?
  • Operating temperatures and temperature extremes?
  • Exposure to chemicals, oils, fuels, cleaning agents?
  • UV, salt water or industrial environment?

Usage & integration

  • Expected opening/closing cycles per day and over product lifetime?
  • Integration method: sewing, HF welding, lamination, other?
  • Need for operation with gloves or in low-light conditions?
  • Ergonomic requirements for puller size, shape and position?
  • Brand or regulatory constraints (standards, certifications)?
Documentation

Testing, standards & certificates

Different applications require different test methods and documentation. We support validation at every level.

Sealing performance

  • Water ingress tests for rain, spray and immersion.
  • Airtightness and pressure retention tests.
  • Application-specific protocols for HAZMAT and medical systems.

Mechanical durability

  • Pull strength and tensile tests.
  • Cycle tests for opening/closing in different environments.
  • Flex and bending tests under cold or heat.

Environment & compliance

  • Temperature cycling and thermal shock tests.
  • Salt spray and corrosion resistance assessments.
  • Compliance with relevant chemical and safety regulations.
Service Terms

SUPPORT & FAQ

Minimum Order Quantity (MOQ)
The minimum order quantity for custom orders is 500 units.
Complimentary samples
Available in standard 20cm lengths and size #3, #5, and #8, are provided free of charge; however, shipping costs are the responsibility of the recipient.
Verified Test Data & Quality Certifications

We provide comprehensive documentation, including SGS Waterproof Test Reports, REACH Compliance Reports, and ISO Certifications, ensuring adherence to global standards. Furthermore, each zipper batch undergoes rigorous internal self-inspection by our dedicated factory Quality Control department. For detailed reports and further information, please contact our customer service team.

Technical Support
  • Bespoke Sealing Solution Design: For highly specialized application scenarios, including demanding sectors like aerospace equipment, our engineers develop bespoke sealing plan designs.
  • Material Compatibility Assessment: To ensure optimal integration, clients are invited to submit their application materials for a thorough compatibility assessment.
  • Precision Installation Guidelines: Following material compatibility confirmation, our technical team provides bespoke processing parameters.
  • Zipper Care & Maintenance Protocols: Comprehensive guidelines are provided for the daily maintenance and long-term care of ZIZIP zippers.
Payment Method And Terms
T/T,L/C;.FOB,CIF,DDP
After-sales Service
  • Warranty Period: This product is covered by a 30-day limited warranty, effective from the date of goods receipt. Replacement units are available, and supplementary repair strips will be provided.
  • Warranty Coverage: This warranty specifically covers performance issues such as water leakage, air leakage, or broken zipper teeth, directly attributable to material defects or manufacturing processes.
  • Exclusions from Warranty:
    -User-Induced Damage: Damage resulting from misuse, including but not limited to cutting, excessive force, or exposure to corrosive chemicals.
    -Improper Maintenance: Issues arising from non-adherence to recommended maintenance guidelines (e.g., zipper obstruction due to uncleaned debris or sand).
    -Unauthorized Alterations: Any repairs or modifications performed by third parties not authorized by ZIZIP.
ZIZIP sealing zippers
Inquiry

Get an application-based recommendation

Tell us about your application and we will recommend suitable zipper solutions, along with samples and documentation.

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