1 Inch 10 ft Heat Shrink Tubing – 3:1 Ratio Adhesive Lined Marine Grade, Dual Wall Waterproof Wire Wrap（5 ft Black & 5 ft Red）for Automotive, Boat, Electrical
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- 🔴⚫ Dual-Color 10 ft Set(5 ft Each) – Includes one 5 ft roll of black and one 5 ft roll of red 1 inch heat shrink tubing. Total 10 feet of high-performance adhesive-lined tubing – enough for multiple wiring projects or color-coded installations.
- 📏 3:1 High Shrink Ratio – Tight, Secure Fit – Shrinks from 1 inch(25.4mm)down to 21/64 inch(8.4mm)with a 3:1 shrink ratio. Provides a much tighter seal than standard 2:1 tubing, ideal for irregular shapes, connectors, and thicker cables. Shrink temperature: 176°F – 257°F(80°C – 125°C).
- 💧 Adhesive Lined – Waterproof & Sealed – Inner hot-melt adhesive activates when heated, flowing into gaps and creating a 100% waterproof, moisture-proof. Perfect for marine, automotive underbody, and outdoor applications where exposure to water and salt is a concern.
- 🛡️ Dual Wall Construction – Strong & Safe – Outer wall provides excellent abrasion, oil. Inner adhesive wall ensures strain relief and environmental sealing.
- 🚤 Wide Application Range – Ideal for marine boat wiring, automotive harness repair, trailer cables, RV electrical, industrial equipment, audio systems, solar connections, and household electrical DIY. Protects solder joints, cable splices, and terminals from rust, moisture, and wear.
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Estimated shipping
Select a product to estimate shipping.Professional-Grade Heat Shrink Tubing for Demanding Environments
Whether you’re rewiring a boat trailer, repairing car harnesses, or weatherproofing outdoor lighting, our 3/4 inch dual-color heat shrink tubing set delivers reliable, long-lasting protection. Featuring a 3:1 shrink ratio and adhesive-lined inner wall, this tubing creates a watertight seal that outperforms standard tubing in harsh conditions. The set includes 5 feet of black and 5 feet of red – perfect for color-coding positive/negative connections or organizing multiple circuits.
Why Choose This Adhesive-Lined Heat Shrink Tubing?
Superior 3:1 Shrink Ratio
Fits a wider range of wire gauges and connector sizes
Ideal for covering irregular shapes like splices, battery lugs, and broken cable jackets
Shrinks quickly and evenly with a heat gun or torch(use low flame, keep moving)
Waterproof & Environmentally Sealed
The built-in hot-melt adhesive creates a permanent barrier against:
Water & moisture – Prevents short circuits
Dust & dirt – Keeps connections clean
Gas & oil – Suitable for engine compartments
Dual-Wall Durability
Outer cross-linked polyolefin: Tough, abrasion-resistant, and flexible
Inner adhesive: Melts and flows to fill voids, providing strain relief and a complete seal
Result: A smooth, professional finish that outlasts electrical tape or standard tubing
Color-Coded for Easy Identification
Red: Positive (+) or power circuits
Black: Negative (–), ground, or return circuits
Simplifies troubleshooting and reduces wiring errors
Endless Applications Across Industries
Marine: Boat wiring, fish finder cables, navigation lights, bilge pumps
Automotive: Trailer harness, off-road lights, sensor wires, battery cables
RV & Camper: Solar panel wiring, interior lighting, 12V systems
Industrial: Control panels, machinery wiring, sensor protection
Home & DIY: Speaker wires, appliance repair, holiday light connections, garden lighting
How to Use:
Cut the desired length of tubing(use sharp scissors or a knife).
Slide it over the wire, cable, or connector before soldering or crimping.
Apply heat evenly with a heat gun(recommended)or carefully with a butane torch.
Heat until the tubing shrinks fully and adhesive flows out slightly from both ends.
Allow to cool – the connection is now sealed and protected.
Pro Tip: For the best seal, ensure the tubing overlaps solid insulation on both ends by at least 1/4 inch. Clean and dry the cable surface before shrinking.
Technical Specifications:
Material: Cross-linked polyolefin(outer)+ Hot-melt adhesive(inner)
Diameter(as supplied): 3/4 inch(19mm)
Diameter(fully recovered): 1/4 inch(6.4mm)
Shrink Ratio: 3:1
Length per color: 5 feet
Total length: 10 feet
Shrink Temperature: 176°F – 257°F(80°C – 125°C)
Operating Temperature Range: -67°F to 230°F(-55°C to 110°C)
Dielectric Strength: ≥15 kV/mm
What’s in the Box:
1 × 5 ft Black 3/4 inch Adhesive-Lined Heat Shrink Tubing
1 × 5 ft Red 3/4 inch Adhesive-Lined Heat Shrink Tubing
Weatherproof your wiring with professional-grade heat shrink – order your 10 ft dual-color set today!
| Main Specification | |
|---|---|
| Fabricant | ALLWIN |
| Marque | ALLWIN |
| Poids de l'article | 9,6 onces |
| Product information | |
| Dimensions de l'emballage | 10.39 x 8.31 x 1.18 inches |
| Others | |
| Date de première disponibilité | 2026 or 29 avril |
| Type de produit | Heat-shrink Tubing |