BKL Electronic 074291 Heat Shrink Tubing 3:1 Black 4.5mm/1.5mm 100m

When cables need reliable insulation and protection, this heat shrink tubing delivers a secure, professional finish. It shrinks to a third of its original diameter when heated, forming a tight seal around wires and connectors.

Who is it for

Electricians, technicians, and DIY enthusiasts who need durable insulation for electrical connections, cable bundling, or strain relief. The 100-meter reel suits workshops and frequent users.

Main features

• 3:1 shrink ratio for a snug fit over irregular shapes
• Initial inner diameter 4.5 mm, recovered inner diameter 1.5 mm
• Flexible polyolefin material with a wide operating temperature range from -55°C to +125°C
• Self-extinguishing and flame retardant for added safety
• Good UV resistance for outdoor applications
• Supplied on a reel for convenient storage and dispensing

Specifications

• Colour: Black
• Length: 100 m
• Shrink ratio: 3:1
• Initial inner diameter: 4.5 mm
• Recovered inner diameter: 1.5 mm
• Material: Polyolefin (PO)
• Operating temperature range: -55°C to +125°C
• Minimum shrink temperature: 70°C
• Full recovery temperature: 110°C
• Dielectric strength: 20 kV/mm
• Voltage rating: 600 V
• Flame retardant: Yes, self-extinguishing
• UV resistance: Good
• Flexibility: Flexible
• Compliance: RoHS Compliant

Tips

Use a heat gun set to at least 70°C for even shrinking. Move the heat source continuously to avoid overheating and ensure a smooth, uniform finish.