Double Wall Adhesive Lined Marine Grade Polyolefin Heat Shrink Tubing A81449-1/8" ID - Black - 6 Inches - 6 Pack Double Wall Cross Linked Polyolefin - Much Stronger than PVC - Flame Resistant Heat Activated Adhesive - Seals Against Salt Water, Oil, Acids, UV Shrinks to 1/3 Original Size - 1/8" ID Shrinks to 1/32" Shrinks at 257F / 125C UL Approved - Made in Taiwan