3M TE100042478 is a multicolor heat shrink tubing designed to protect and organize wiring for electronics, automotive, and DIY projects. With a 7 m length and a shrink profile from 9 mm outer diameter to 3 mm inner diameter, it delivers a clean, coded look and reliable insulation when exposed to heat up to 120 °C.

Key Features & Design

• Color: Multicolor
• Length: 7 m
• Unshrunk outer diameter: 9 mm
• Shrunk inner diameter: 3 mm
• Shrink temperature: 120 °C

Performance / Benefits

The heat shrink tubing provides reliable electrical insulation and protective coverage for wires, cables, and connections. When heated to 120 °C, it contracts smoothly to form a neat, compact sleeve that helps prevent abrasion, moisture ingress, and loose wiring. The multicolor design also supports easy color-coding and organization for complex cable assemblies.