3M™ heat shrink tubing MW is color coded for quick and easy identification of the wire. It provides a skintight fit and strain relief sealing of electrical connections, wire splices and components. This heat shrinkable tubing is co-extruded and cross linked to offer a meltable inner wall. When the tubing cools down, it forms an insulating barrier to chemicals and solvents. It withstands temperatures of -67 to 230 deg F.