30mm Dual-Wall Heat Shrink Tubing – 2:1 Ratio, Waterproof, Adhesive-Lined | Heavy-Duty Cable Protection

This 30mm Dual-Wall Heat Shrink Tubing offers robust environmental sealing and mechanical reinforcement for electrical connections, making it ideal for automotive wiring, marine applications, industrial equipment, and rugged outdoor installations. The tubing provides reliable insulation and strain relief, featuring a durable polyolefin exterior and adhesive-lined inner wall for a waterproof, dustproof seal.

Key Features:

• 2:1 Shrink Ratio:
  Shrinks to 50% of its original diameter when heat is applied, creating a tight fit around cables, connectors, and splices.

• Dual-Wall Construction:
  Combines a tough polyolefin outer layer with an inner thermoplastic adhesive. During heating, the inner layer melts and forms a strong bond with underlying surfaces.

• Environmental Sealing & Pullout Resistance:
  Creates a watertight, dustproof seal and resists mechanical strain, cable slippage, and pullout—ideal for rugged, high-vibration environments.

• Bend Radius Reinforcement:
  Reinforces stress points, especially where cables bend sharply (e.g., coaxial or control cables), reducing wear and fatigue.

Technical Specifications:

• Nominal Diameter (Before Shrink): 30mm

• Shrink Ratio: 2:1

• Material: Cross-linked polyolefin + adhesive lining

• Operating Temperature: –55°C to +125°C

• Shrink Activation Temperature: Begins ~70°C; Full shrink at ~110°C

• Sealing Rating: Waterproof and dustproof when fully shrunk

Applications:

• Automotive wiring harnesses

• Marine electronics

• Outdoor sensor cables

• Industrial control panels

• RC electronics and robotics