Double Wall Heat Shrink Tube

In modern electrical insulation, cable protection, and sealing applications, Double Wall Rubber Tubes, Identification Heat Shrinkable Sleeves, Dual Wall Heat Shrink Tubes, and Double Wall Heat Shrink Caps play a crucial role. Engineered for durability, environmental resistance, and strong sealing performance, these products are widely used in automotive, aerospace, marine, telecommunications, and industrial wiring systems.

What Is a Double Wall Heat Shrink Tube?

A Double Wall Heat Shrink Tube is a dual-layer insulated tubing made from polyolefin outer layer and inner adhesive lining. When heated, the outer layer shrinks tightly around the substrate while the inner adhesive melts, creating a waterproof, airtight seal.

Key Benefits:

• Excellent Insulation

• Waterproof and Moisture Protection

• Abrasion and Chemical Resistance

• Strong Mechanical Bonding

Double Wall Rubber Tube

The Double Wall Rubber Tube offers additional flexibility and superior sealing performance compared to standard tubing. It is designed for environments requiring elasticity and resistance to vibration.

Features:

• Highly flexible rubber material

• Shock and vibration absorption

• Excellent environmental sealing

• Suitable for irregular cable shapes

Applications:

• Automotive harness protection

• Battery terminal insulation

• Industrial machinery wiring

Identification Heat Shrinkable Sleeve

Identification Heat Shrinkable Sleeves are designed for wire marking, coding, and labeling. They not only insulate cables but help in easy circuit identification during installation and maintenance.

Key Features:

• Printable surface for text or barcode

• Oil, chemical, and abrasion resistant

• Flame-retardant and halogen-free options

Uses:

• Wire labeling in control panels

• Aerospace harness identification

• Telecom and network cabling

Dual Wall Heat Shrink Tube

The Dual Wall Heat Shrink Tube is synonymous with double wall tubing. It provides high performance insulation and strain relief in harsh environments.

Performance Advantages:

• Adhesive-lined inner layer

• High shrink ratio (2:1, 3:1, or 4:1)

• Seals connectors, terminals, and splices

Double Wall Heat Shrink Cap

A Double Wall Heat Shrink Cap is used to protect the open ends of cables, pipes, and rods. Once heated, the cap shrinks and seals the end, preventing moisture, dust, and corrosion.

Common Uses:

• End sealing of cables and conduits

• Marine and underground wiring

• Outdoor LED and power connections

Key Product Advantages

Typical Applications

• Automotive Wiring Harness Sealing

• Industrial Machinery Protection

• Marine Cable Insulation

• Solar and Outdoor Power Systems

• Electronic Connector Reinforcement

How to Use Heat Shrinkable Tubes & Caps

1. Cut to Length – Select appropriate diameter and length.

2. Position Over Cable or Connector

3. Apply Heat – Use heat gun or controlled hot air source.

4. Shrink and Seal – Outer layer shrinks, inner adhesive melts and seals.

FAQ: Frequently Asked Questions

Q1: What is the difference between single wall and double wall heat shrink?
A: Double wall has an adhesive lining for waterproof sealing; single wall provides only insulation.

Q2: Can double wall tubes be used outdoors?
A: Yes, they are UV-resistant and suitable for harsh outdoor environments.

Q3: Are identification sleeves printable?
A: Yes, they support inkjet, laser, and thermal transfer printing for labeling.

Q4: What temperature is required for shrinking?
A: Typically 110°C–130°C depending on material.

Q5: Which industries use heat shrink caps?
A: Used in automotive, marine, telecommunications, and renewable energy sectors for sealing cable ends.