Double-Wall Heat Shrink Tube with Adhesive Liner | Waterproof Insulation for Automotive and Outdoor Use
This double-wall heat shrink tube features a tough polyolefin outer layer and a thermoplastic adhesive inner liner. When heated, it creates a waterproof, durable, and insulated seal—ideal for cable joints in automotive, electrical, and outdoor communication systems.
■ Key Specifications
・ Outer Layer: Abrasion-resistant polyolefin
・ Inner Layer: Thermoplastic adhesive (hot-melt)
・ Shrink Ratio: 3:1
・ Shrink Start Temperature: 80℃
・ Full Recovery Temperature: 125℃
・ Operating Temperature: -55℃ to +125℃
・ Standards: UL224 / VW-1 flame retardancy
■ Features and Benefits
・ Waterproof Seal: Inner adhesive melts to bond tightly, preventing moisture ingress
・ Strong & Durable: High abrasion resistance for harsh environments
・ Insulation + Sealing: Combines mechanical protection and electrical insulation
・ Weather & Chemical Resistance: Ideal for outdoor and industrial applications
・ Flexible Sizing: Supports a wide range of wire and cable diameters
■ Industry Applications
・ Automotive Wiring: Sealing for wire splices, connectors, and battery cables
・ Electrical Panels & Equipment: Protection for terminals and joints
・ Telecom Infrastructure: Moisture-proofing for outdoor cables and junctions
・ Industrial Control Panels: Waterproofing in machinery and robotics
・ Energy Systems: Cable insulation in solar, EV, and battery setups
■ Why Choose This Heat Shrink Tube
・ Dual-layer design integrates sealing, insulation, and durability
・ Adhesive bonding ensures long-term reliability under vibration and moisture
・ UL-certified for global applications and OEM standards
・ Stocked in various sizes and lengths for fast shipment
■ Technical Details
・ Volume Resistivity: ≥1×10¹⁴ Ω·cm
・ Dielectric Strength: 2500V / 60s without breakdown
・ Tensile Strength: ≥10.4 MPa
・ Elongation at Break: ≥200%
・ Adhesion Strength: ≥80N/25mm
・ Flame Resistance: VW-1 (UL224 Certified)
■ Installation Guidelines
・ Use tubing 3× larger than pre-shrink cable diameter
・ Heat to ≥125℃ for full recovery and proper sealing
・ For outdoor or high-humidity use, ensure full shrinkage to activate adhesive
■ For further details, please contact us or download the catalog via the link below.
Others
CONTACT
Inquiry for the above productCompany Information
SOLENOID / SILICONE FIBERGLASS TUBE / HEAT SHRINK TUBE
Our company specializes in the import and export of automotive components, electrical insulation materials, and plastic products. Based in Japan, we leverage our global network to powerfully support t ...