Our dual extra-heavy wall adhesive lined heatshrink tubing is a rigid, heavy-wall tubing that is made for the harshest envirmonments. It is lined with a thermo-plastic adhesive for superior contaminant and corrosion resistance. The heavy walls provide excellent insulation, abrasion resistance and strain relief, and are flame retardent. It has a shrink ration of 3 to 1 and an operating tempurature range of -67F to 230F.