3/8" ID Heat Shrink Tubing - 3:1 Ratio - Dual Wall Adhesive - 12" Length - 4 or 12 Pack

This 3/8" ID 3:1 dual wall adhesive-lined heat shrink tubing delivers rugged, watertight protection for 12–16 AWG wire connections in automotive, marine, and industrial applications. Its flexible polyolefin construction with heat-activated adhesive conforms to uneven wire bundles and creates a sealed barrier against moisture, corrosion, and abrasion.

Specifications & Features

• Wire Compatibility: 12–16 AWG
• Shrink Ratio: 3:1
• Pre-shrink Inner Diameter: 3/8"
• Recovered Inner Diameter: 0.120"
• Wall Type: Dual wall with internal thermoplastic adhesive lining
• Material: Flame-retardant polyolefin (outer), adhesive-lined (inner)
• Length: 12" per segment
• Available Colors: Black, Red, Clear
• Forms a watertight, corrosion-resistant seal over splices and terminations
• Flexible tubing conforms to irregular shapes and wire bundles
• Ideal for harness repairs, marine wiring, and electronic protection