| Quantity: | |
|---|---|
Our dual wall heat shrink tubing is a high-performance thermoplastic solution engineered for superior cable insulation, protection and environmental sealing across industrial, automotive and electronic applications. Constructed with a tough outer polyolefin layer and an inner adhesive lining, this adhesive lined heat shrink tube shrinks tightly around cables, wires and connectors when heat is applied, forming a waterproof, airtight and abrasion-resistant barrier. Available in customizable sizes, colors and shrink ratios (2:1/3:1), it is designed to fit a wide range of component diameters, eliminating gaps and providing reliable insulation for low to medium voltage wiring systems. Unlike single-wall tubing, our dual wall design combines mechanical protection and chemical resistance with permanent environmental sealing, making it the ideal industrial grade dual wall heat shrink for harsh operating conditions.
Superior Environmental Sealing: The meltable adhesive lining creates a 100% waterproof and dust-tight seal, protecting against moisture, salt, chemicals and corrosion—critical for outdoor, underground and marine applications.
Flame Retardant & Electrical Safety: Complies with flame retardant standards, preventing fire spread and providing insulation against electrical shock and short circuits, meeting the safety requirements of automotive and industrial wiring.
Exceptional Durability: The rugged outer layer resists abrasion, bending, vibration and mechanical impact, extending the service life of cables in high-wear environments such as engine compartments and industrial machinery.
Easy & Efficient Installation: Requires only a standard heat gun (no special tools) and can be installed in minutes; the adhesive lining flows evenly to cover sharp edges and irregular shapes, ensuring a uniform fit every time.
Professional Cable Organization: Color-coded and printable options enable clear circuit identification, delivering a neat, organized wiring layout that simplifies maintenance and troubleshooting in electrical panels and cable harnesses.
Parameter | Standard Value | Customizable Range | Test Method |
Material | Outer: Cross-linked polyolefin; Inner: Hot-melt adhesive | PVC/fluoropolymer outer layer | ISO 37 |
Shrink Ratio | 2:1 (standard) | 3:1 for large-diameter cables | UL 224 |
Operating Temperature | -55°C to +125°C | -60°C to +150°C (high-temp grade) | IEC 60216 |
Tensile Strength | ≥10.3 MPa | ≥12 MPa (high-strength grade) | ISO 37 |
Break Elongation | ≥200% | ≥250% | ISO 37 |
Dielectric Strength | ≥19.7 MV/m | ≥25 MV/m (high-insulation grade) | IEC 60243 |
Flame Retardancy | VW-1/S3 | UL 94 V-0 | UL 224/DIN 5510-2 |
Water Absorption | ＜1.0% | ＜0.5% (ultra-low absorption) | ASTM D 570 |
Automotive & Marine Wiring: Our flame retardant heat shrink for automotive wiring and waterproof heat shrink tubing for marine use protect engine compartment harnesses, battery terminals and lighting connections from fuel, oil, temperature extremes and saltwater corrosion, meeting SAE marine and automotive standards.
Electrical Panel & Low-Voltage Wiring: Provides insulation and sealing for wire splices, terminals and connectors in household appliances, commercial electrical panels and low-voltage distribution systems, preventing short circuits and electrical hazards.
Industrial Machinery & Automation: Reinforces cable entry points and sensor wiring, resisting vibration and chemical exposure in manufacturing equipment, conveyor systems and robotic automation setups.
Outdoor & Underground Cables: Seals underground cable joints and outdoor wiring against moisture and soil corrosion, ideal for power distribution, telecom networks and construction site temporary wiring.
Emergency Field Repairs: Serves as a reliable temporary repair solution for damaged cables in construction, maintenance and emergency services, restoring insulation and safety until permanent repairs are completed.
Our dual wall heat shrink tubing is rigorously tested and certified to meet global industry standards, ensuring reliability and regulatory compliance for B2B applications:
UL 224 (Electrical Insulation Tubing)
SAE-AMS-DTL-23053/4 (Automotive & Aerospace)
RoHS 2011/65/EU (Restriction of Hazardous Substances)
CSA Certified (Canadian Electrical Code)
DIN 5510-2 (Railway Flame Retardancy)
A: A standard adjustable heat gun (300-500°F) is ideal; avoid open flames to prevent overheating and adhesive degradation. For large-diameter tubing, use a heat wrap gun for uniform heating.
A: Yes—the molten adhesive lining flows to cover sharp edges, splices and irregular shapes, eliminating air pockets and providing a complete seal without tearing or cracking.
A: When stored in a cool, dry environment (≤50°C, away from direct sunlight), the tubing has a shelf life of 3 years from the date of manufacture.
We offer flexible custom solutions for dual wall heat shrink tubing to meet your specific industrial requirements: customizable diameters (2mm–100mm), colors (black, red, blue, yellow and custom RAL codes), pre-cut lengths, and printed markings (part numbers, voltage ratings, circuit codes). For bulk procurement (MOQ: 100 meters), we provide volume-based pricing discounts, dedicated technical support and flexible delivery timelines (1–2 weeks for standard orders, 3–4 weeks for custom grades). Our OEM/ODM services include custom shrink ratios, high-temperature or chemical-resistant formulations, and packaging customization (cartons, reels, bulk packaging). We also provide free sample kits (including different sizes and shrink ratios) for pre-testing in your specific applications, with global shipping available for bulk orders.
