Cutting-edge sealing technology—your ultimate solution for waterproof and dustproof high-end outdoor gear
The DFZIP Sprial Airtight Zipper features a revolutionary Triple Airtight Barrier System: an outer layer of high-strength nylon Sprial tape provides structural support, a middle layer utilizes patented TPU heat-melt co-extrusion technology to form a dense airtight barrier, and an inner layer incorporates a flexible airtight sealing strip for dynamic sealing. Tested to ISO 10648-1 airtightness standards, it achieves a leakage rate of ≤0.1 Pa·m³/s (equivalent to a 100-meter underwater pressure differential), specifically engineered for high-pressure differential environments to completely solve leakage issues with traditional zippers in vacuum/high-pressure applications.
| Airtight Rating: | ISO 10648-1 Class A (≤0.1 Pa·m³/s) |
| Pressure Differential Resistance: | ≥100 kPa (equivalent to 10-meter water column pressure differential) |
| Sealing Structure: | Triple barrier: TPU co-extruded layer + airtight sealing strip + Z-shaped interlocking teeth |
| Flexural Endurance: | ≥10,000 cycles (tested under 50 kPa pressure differential cycling) |
| Temperature Range: | -40°C to +120°C (validated through ASTM D7017 thermal cycling test) |
| Material Composition: | Aramid fiber Sprial tape (tear-resistant) + Medical-grade TPU (ISO 10993 biocompatibility certified) |
Widely applied in fields requiring both high airtightness and extreme mechanical strength
Spacesuits, aircraft pressure cabin doors, pressure garments
Submersible hatches, underwater robot housings, deep-sea diving suits
Isolation room airtight doors, biohazard protective suits, negative-pressure isolation chambers
Vacuum glove boxes, biosafety cabinets, sterilization equipment
Strict adherence to the following professional specifications is required to ensure high airtight performance
Supports the following deep customization services: