3:1 Black Adhesive-Lined Waterproof Heat Shrink Tubing

Our 3:1 Black Adhesive-Lined Waterproof Heat Shrink Tubing is designed for superior electrical insulation, secure cable bundling and long-lasting protection against water, dust and environmental wear. Featuring a dual-wall polyolefin construction with an inner adhesive lining, this high-performance tubing delivers exceptional sealing and mechanical strength once shrunk. Ideal for wire harnesses, machinery, automotive applications and general manufacturing environments. Datasheets are available upon request.

Technical Specification

• Material: Polyolefin
• Shrink Ratio: 3:1
• Lining: Adhesive-lined dual wall
• Working Temperature: -55°C to +125°C
• Shrink Temperature: 90°C
• Pre-shrink Diameter Range: 3.2mm – 38.1mm
• Post-shrink Diameter Range: 1mm – 12.7mm
• Pre-shrink Lay-flat Width: 5mm – 60mm
• Colour: Black
• Reel Length Options: 200m – 20m
• Dielectric Voltage Withstand: 2500V for 60 seconds (no breakdown)
• Flammability Rating: VW-1
• Certifications: UL Approved, RoHS Compliant, Zero Halogen
• Size Reference (ID = Internal Diameter):

• 3.2mm → 1mm (5mm lay-flat)
• 4.8mm → 1.6mm (7.5mm lay-flat)
• 6.4mm → 2mm (10mm lay-flat)
• 9.5mm → 3mm (14.9mm lay-flat)
• 12.7mm → 4mm (19.9mm lay-flat)
• 19.1mm → 6mm (30mm lay-flat)
• 25.4mm → 8.5mm (40mm lay-flat)
• 38.1mm → 12.7mm (60mm lay-flat)
  • Important Note: Sizes 9.5mm and below are supplied round, while 12.7mm and above are supplied flat.
• ID = Inner Diameter. Please note that the specified inner diameter is the pre-shrink diameter of the heat shrink tubing, and not the lay-flat width. For lay-flat width dimensions, please see the description box.