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Product Description:

The Dual Wall Heat Shrink Tube stands out as a premium, versatile solution—defined by its unique dual-wall construction, UL-certified flame resistance, and multi-ratio adaptability—delivering superior insulation, airtight protection, and long-lasting durability for electrical and mechanical applications. Engineered to excel in harsh conditions, it is the top choice for professionals seeking enhanced performance, combining exceptional flexibility, strong adhesive sealing, and robust reliability to safeguard wires, cables, connectors, and critical components.​
Core Advantages: What Sets It Apart​
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Unique Dual-Wall Adhesive Design: The defining feature that delivers unmatched protection. An outer heat-shrinkable layer tightly grips substrates when heated, while an inner adhesive lining melts to form a 100% waterproof, airtight seal. This dual action blocks moisture, dust, and contaminants, prevents corrosion and abrasion, and provides superior mechanical support—making it ideal for outdoor, harsh, or high-stakes environments.​
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UL224 VW-1 Flame Resistance Certification: Meets stringent global safety standards to resist ignition and flame propagation. It eliminates fire hazard risks, adding a critical layer of protection for residential, commercial, and industrial installations. This certification ensures compliance with internationally recognized protocols, earning the trust of engineers and technicians worldwide.​
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Multiple Shrink Ratios (2:1, 3:1, 4:1): Offers tailored flexibility for diverse applications. The 2:1 ratio suits standard wiring and components; 3:1 and 4:1 ratios adapt seamlessly to complex, irregular shapes or larger bundles. This versatility accommodates varying wire diameters and configurations, making it a go-to solution across automotive, aerospace, telecommunications, and electronics industries.​
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Exceptional Flexibility: Unlike rigid or brittle alternatives, it bends and conforms to tight spaces and intricate wiring without cracking or compromising protection. Its pliability simplifies installation and absorbs mechanical stress, vibrations, and movement—ensuring long-term reliability in dynamic environments.​
Efficient Application & Thermal Stability​
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Full Shrink Temperature of 125℃: Enables fast, uniform contraction for efficient, hassle-free installation. The precise shrinking action creates a tight, secure seal that maintains integrity even in temperature-fluctuating environments—enhancing the longevity and reliability of protected components.​

The Dual Wall Heat Shrink Tube is an advanced, high-performance solution that prioritizes protection, safety, and versatility. Its unique dual-wall adhesive design, UL224 VW-1 flame resistance, and multi-ratio adaptability address the most critical needs of demanding applications. Combined with exceptional flexibility and efficient 125℃ shrinking, it delivers uncompromising quality for industrial, automotive, electronic, and outdoor use—proven to meet the highest standards of durability and performance

Features:

• Product Name: Dual Wall Heat Shrink Tube
• Operating Temperature Range: -55℃ to 125℃
• Material: Durable Polyolefin
• Tensile Strength: 10.4 MPa for enhanced durability
• Minimum Shrink Temperature: 80℃ for efficient shrinking
• Features dual wall adhesive heat shrink tubing for superior sealing
• Provides reliable insulation and protection with double wall heat shrink design
• Offers excellent adhesion with double wall adhesive heat shrink for secure connections

Technical Parameters:

Applications:

The Long brand Dual Wall Heat Shrink Tube, model number 50mm, is an essential product widely used in various applications requiring reliable insulation and protection. Manufactured in China and certified by ISO9001, this double wall heat shrink tubing guarantees high quality and consistent performance. With its excellent flexibility and impressive tensile strength of 10.4Mpa, it ensures durability and long-lasting protection for electrical and mechanical components.

This dual wall heat shrink is especially suitable for electrical insulation, wire bundling, and cable repair in both industrial and consumer electronics. The inner adhesive lining melts during the shrinking process, providing a waterproof and airtight seal that enhances protection against moisture, dust, and chemicals. This makes it ideal for use in harsh environments, including automotive wiring, marine applications, and outdoor electrical installations where reliability is crucial.

Thanks to the polyolefin material, the double wall heat shrink tubing has a minimum shrink temperature of 80℃ and a full shrink temperature of 125℃, allowing for quick and efficient application using standard heat guns or other heating tools. Its excellent flexibility enables it to conform tightly around irregular shapes and connectors, ensuring a secure fit and preventing abrasion or corrosion over time.

Businesses and manufacturers can benefit from a minimum order quantity of 100 meters, with a competitive price of USD 0.52 per meter. Packaged conveniently in cartons for easy handling and storage, the product boasts a high supply ability of 100,000 meters per day. Delivery is fast, typically within 2-5 days, with payment terms set as TT in advance, supporting smooth and reliable procurement processes.

In summary, the Long brand double wall heat shrink tubing is perfect for a wide range of product application occasions and scenarios, including electrical insulation, cable repair, wire harness protection, and environmental sealing in automotive, marine, industrial, and consumer electronics fields. Its certified quality, rapid delivery, and excellent mechanical properties make it a trustworthy choice for professionals seeking durable and efficient dual wall heat shrink solutions.