3M MDT-A 120/40-B Medium-Wall Adhesive-Lined Heat Shrink Tubing, 3:1, 120mm to 40mm, 1m, Black

The 3M MDT-A 120/40-B stands out with its adhesive-lined, medium-wall construction, delivering a waterproof and environmentally sealed connection that standard heat shrink tubing cannot match. Its 3:1 shrink ratio allows it to cover a wide range of cable and connector sizes, reducing inventory needs.

Highlights

• Adhesive-lined for waterproof and environmental sealing
• 3:1 shrink ratio for versatile application
• Medium-wall cross-linked polyolefin for durable mechanical protection
• Wide operating temperature range from -55°C to +110°C
• Excellent UV resistance for outdoor use

In daily use

This heat shrink tubing is ideal for electrical insulation, mechanical protection, and corrosion prevention in demanding environments. The adhesive lining melts during shrinking to create a moisture-resistant barrier, making it suitable for underground splices, automotive wiring, and marine applications. The black colour provides a professional finish and helps with wire identification.

Full specifications

• Series: MDT-A
• Wall type: Medium-wall, adhesive-lined
• Shrink ratio: 3:1
• Inner diameter before shrinking: 120 mm
• Inner diameter after shrinking: 40 mm
• Wall thickness after shrinking: 3.3 mm
• Length: 1 m
• Material: Cross-linked polyolefin
• Operating temperature: -55°C to +110°C
• Minimum shrink temperature: 120°C
• Dielectric strength: >15 kV/mm
• UV resistance: Good

Final note

Engineered for reliability, the 3M MDT-A 120/40-B provides long-lasting protection for critical electrical connections.