This 1/4″ ID 3:1 dual wall adhesive-lined heat shrink tubing provides durable, watertight insulation for wire splices, terminals, and electronic components in demanding environments. Each pack includes (8) black and (8) red 12″ pieces, making it easy to identify connections and organize wiring in automotive and marine systems. The inner adhesive melts when heated, forming a secure, corrosion-resistant seal that protects against moisture and contaminants.

Specifications & Features

• Shrink Ratio: 3:1
• Pre-shrink Inner Diameter: 1/4″
• Recovered Inner Diameter: 0.080″
• Wall Type: Dual wall with heat-activated adhesive lining
• Adhesive Type: Modified polyimide thermoplastic glue
• Includes: (8) 12″ Black pieces and (8) 12″ Red pieces
• Seals and insulates splices to protect against corrosion and water intrusion
• Highly flexible material conforms to irregular shapes for use in tight or complex installs
• Recommended for automotive harnesses, marine wiring, and outdoor electronics