3M Heat Shrink Heatshrink + adhesive 620757 - 3M MDT-A12/3-B, The 3M MDT-A12/3-B heatshrink with adhesive is a durable solution for electrical insulation and protection. With a 4:1 shrinkage ratio and reducing from 12 mm to 3 mm, it offers a secure fit for wires and cables. Ideal for automotive, marine, and industrial applications, it ensures a reliable seal and protection against moisture. 3M MDT-A12/3-B MDT-A Heatshrink Tubing Black 12mm-3mm Adhesive 1m