Sealing Zippers
IPX5 · #8

#8 Closed-End HydroSeal Waterproof Zipper

A heavy-duty #8 closed-end design providing robust IPX5 sealing, made for high-performance outdoor and marine gear.

  • IPX5 Watertight Protection: Engineered with a TPU coating to form a reliable seal against high-pressure water spray.
  • Heavy-Duty Construction: The #8 size offers a transverse tensile strength of 970N, ideal for high-stress applications.
  • Long-Lasting Performance: Tested to 1200 reciprocating cycles, ensuring a smooth and durable closure for the product's lifespan.
  • Closed-End Design: Perfect for pockets, compartments, and access panels where a non-separating closure is required.

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Key Feature

Key Features

Heavy-Duty #8 Build

Large-format #8 chain engineered for gear that takes abuse — packs, covers, and marine equipment.

IPX5 Water Blocking

Reliable liquid-water sealing for spray, splash, and heavy rain scenarios.

Closed-End Structure

Fixed bottom stop keeps the seal continuous — no separation point for water to find.

Salt-Spray Verified

Passes 48-hour salt spray testing for marine-environment service.

Sizing

Find the Right HydroSeal™™ Size

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#3 Waterproof Zipper

  • Length: Customized
  • Width: 24.5-26 cm
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#5 Waterproof Zipper

  • Length: Customized
  • Width: 30.5-32 cm
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#8 Waterproof Zipper

  • Length: Customized
  • Width: 39.5-41.5 cm
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Custom Your Zipper

  • Length: Customized
  • Width: Customized

Technical Data Sheet

Inspection Item Test Result
Compliance Threshold
Transverse Tensile Strength 970N >700N
Slider Initial Pull Force 30N <40N
Smooth Sliding Performance 25N <30N
Abrasion Resistance 150 continuous reciprocating cycles
100 continuous reciprocating cycles
Tooth-to-Tape Peel Strength 28-36N/27-38N/30-41N
Tooth Engagement Width 1.5cm, >20N
Tape-to-Finishing Peel Strength 24-33N/27-36N/25-33N
Tape Body Width 1.5cm, >15N
Reciprocating Test under Load 1200 cycles >1000 cycles
Waterproof Rating IPX5 (SGS)
GB/T 4208-2017 IPX5
Water Penetration Test No water leakage during continuous 10-minute external surface spray test
No water leakage during continuous 5-minute external surface spray test
Slider Hardness 115HV0.3
Vickers-Hardness 0.3 Test (>80 HV0.3)
Slider Load Capacity 170N >100N
Slider Tensile Strength 165N >100N
Pull Tab Torque Resistance 345N >200N
Pull Tab Extraction Strength 255N >150N
Proven

Trusted Performance in Various Extreme Environments

Waterproof Duffel Bag

Backpack & Bag Pockets

Apparel Pockets_770_513

Apparel Pockets

Gear &amp; Instrument Cases

Gear & Instrument Cases

OEM / ODM

OEM/ODM Module: Your Vision, Our Engineering

Millimeter-Perfect Customization

Precision is paramount. We manufacture zippers to your exact length specifications, achieving millimeter-level accuracy. This dedication ensures seamless integration into your application, significantly minimizing material waste, and simplifies your overall assembly process.

Millimeter-Perfect Customization

Custom Colors for Brand Matching

Match your brand's exact color palette. We provide custom color matching for both the zipper tape and the TPU coating based on the Pantone (PMS) color system, ensuring seamless integration with your product's design.

Custom Colors for Brand MatchingCustom Colors for Brand Matching

Specialized Puller Designs with Your Logo

We offer a variety of industrial-grade zipper puller options tailored for different application scenarios, combining functionality, ergonomics, and visual appeal, with the option to customize brand logos upon request.

Specialized Puller Designs with Your LogoSpecialized Puller Designs with Your LogoSpecialized Puller Designs with Your LogoSpecialized Puller Designs with Your Logo

Custom Material & Coating

Engineered for your specific application. Our zippers are built with high-strength Polyester fabric tape and coated with a high-performance TPU (Thermoplastic Polyurethane) layer. We work with you to ensure the material combination provides the optimal balance of flexibility, durability, and sealing performance.Consult our team of engineers and we will deliver the optimal solution tailored to your specific needs.

Custom Material & CoatingCustom Material & Coating

SUPPORT & FAQ

What are your standard zipper specifications? Can I request customization?
Our standard zipper sizes are No. 3, No. 5, and No. 8, with detailed parameters listed in the Raw Woven Zipper Quality Standards. Customization options include: Length (tailored to your requirements) Color (standard and custom colors available) Slider/zip puller (various designs; selected models can be engraved with logos)
What is your minimum order quantity (MOQ) and lead time?
MOQ: 500 pieces per order. For quantities below 500, a setup fee of RMB 200 applies. Sample Policy: Free standard samples are available (No. 3/5/8, 20cm length), with freight collect. Lead Time: (based on current factory schedule) Samples: black waterproof airtight zippers within 48 hours; colored and double-tooth types within 3–5 days. Bulk orders (<10,000 pcs): black waterproof airtight within 3 days; colored and double-tooth within 5–7 days. Bulk orders (>10,000 pcs): subject to scheduling. Current production is booked until October.
Do your zippers have certifications? What testing do you perform before shipment?
Yes, our zippers are certified with SGS waterproof certification and ISO quality management system certification. Before shipment, each batch undergoes strict testing: Appearance (visual inspection), dimension (steel ruler), color (colorimeter) Airtightness test (custom testing device) Smoothness test (tensile tester), peel strength, adhesive bonding test Repeated open/close test (manual), jamming inspection 90° bending pull test (manual), packaging inspection
What after-sales service and technical support do you provide?
After-Sales Warranty: 30-day warranty from receipt. Defects caused by material issues or manufacturing (e.g., leakage, airtight failure, broken teeth) are covered with replacement or compensation. Exclusions: man-made damage, improper maintenance (e.g., dirt/sand not cleaned), third-party repair/modification. Technical Support: Instant contact: online chat (EN & CN), support email, emergency hotline (Mon–Fri, 9:00–18:00 GMT+8) Material verification (send us your material for compatibility testing) Processing guidance (temperature, pressure, time parameters for verified materials) Usage & maintenance guide Custom sealing solutions for special applications (e.g., aerospace equipment)
What shipping and payment options do you offer?
Shipping Terms: FOB, CIF, DDP. Long-term logistics partners available for flexible delivery solutions. Payment Methods: T/T and L/C. Detailed terms can be discussed based on order conditions.