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Dual Wall Adhesive Heat Shrink Tubing 4:1 – 4 to 20mm Sizes
Dual Wall Adhesive Heat Shrink Tubing 4:1 – 4 to 20mm Sizes
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Dual Wall Adhesive Heat Shrink Tubing – Professional Cable Protection
Keep your wiring neat, secure, and fully protected with this Dual Wall Heat Shrink Tubing with Hot Melt Glue Lining. Engineered from high-quality polyethylene (PE) with an inner adhesive layer, these tubes shrink at a 4:1 ratio, creating a tight, moisture-resistant, and mechanically strong seal around cables, wires, connectors, and splices. Available in six popular diameters — 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm — there's an ideal size for every project.
Made in Mainland China.
Why Choose Dual Wall Heat Shrink Tubing?
- 4:1 Shrink Ratio: Exceptional coverage — ideal for irregular shapes, connectors, and bundle terminations.
- Hot Melt Adhesive Inner Layer: The internal glue flows and seals as it shrinks, creating a watertight, corrosion-resistant barrier against moisture, dust, and chemicals.
- Polyethylene (PE) Construction: Flexible, durable, and resistant to abrasion, UV, and common solvents.
- Wide Size Range: 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm inner diameters to handle a broad variety of cables and wire gauges.
- Electrical Insulation: Provides a reliable dielectric barrier to safeguard connections from short circuits and signal interference.
- Versatile Applications: Suitable for automotive wiring harnesses, marine cables, electrical panels, DIY electronics, and industrial installations.
Key Specifications
- Material: Polyethylene (PE) with hot-melt adhesive inner lining
- Shrink Ratio: 4:1
- Available Diameters: 4mm / 6mm / 8mm / 12mm / 16mm / 20mm
- Type: Dual Wall, Heat Shrinkable
- Application Method: Heat gun or similar controlled heat source
- Country of Origin: Mainland China
Ideal For
- Automotive and motorcycle wiring harnesses
- Marine and outdoor electrical connections
- Battery terminal protection
- DIY electronics and home wiring projects
- Industrial cable management and bundling
- Connector and splice sealing
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Safety & Standards Reference
For best practices in electrical wiring safety and insulation standards, refer to the U.S. Consumer Product Safety Commission – Electrical Safety Resources.
Frequently Asked Questions
Q: What is the shrink ratio of this dual wall heat shrink tubing?
A: This tubing features a 4:1 shrink ratio, meaning it can shrink down to one-quarter of its original inner diameter. This makes it excellent for covering larger connectors, irregular shapes, and bundled wire terminations securely.
Q: What tool do I need to apply dual wall heat shrink tubing with glue?
A: A standard heat gun is recommended for best results. Apply even, controlled heat around the tube — the outer PE layer will shrink tightly while the inner adhesive lining melts and flows to create a sealed, moisture-proof bond around your cable or connector.
Q: Which diameter should I choose for my cable?
A: Select a tubing inner diameter that is slightly larger than the widest part of your cable or connector before shrinking. Options include 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm — suitable for everything from thin signal wires to thick power cables and battery terminals.
Q: Is this heat shrink tubing waterproof?
A: Yes. The hot-melt adhesive inner layer melts during the shrinking process and forms a watertight seal around the cable, making it suitable for outdoor, marine, and automotive environments where moisture ingress is a concern.
