3M Heat Shrink Tubing MW is a multiple wall tubing offering the advantage of integral, adhesive lined construction. This tubing has a 2.5:1 shrink ratio and provides insulation for 600V rated applications. Semi rigid polyolefin construction ensures moisture seal protection for automotive and marine applications.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 degrees F ( 55 to 110 degrees C). UL Listed, SAE SAE AS23053/4, Class 1, CSA Certified and RoHS 2011/65/EU Compliant.