Adhesive Lined Heat Shrink Tubing ALT 3/4 x 48 1-Pack Black. Package of 1 Black 48 122cm long sections with a 3/4 19mm diameter that shrinks to 1/4 6.4mm . Wire Range 8-2/0 AWG. Features Cross Linked polyolefin tubing is much stronger than PVC tubing and. will not burn like PVC. Heat activated adhesive lining provides impervious seal to salt water,. oil, acids, and sunlight as well as providing strain relief. Highest shrink ratio shrinks to 1/3 original size. Shrinks at 257 DegreesF / 125 DegreesC. Operating temperature range of 40 DegreesC to 110 DegreesC. UL 224 Package of 1 Black 48 122cm long sections with a 3/4 19mm diameter that shrinks to 1/4 6.4mm . will not burn like PVC. Heat activated adhesive lining provides impervious seal to salt water, Shrinks at 257 DegreesF / 125 DegreesC Operating temperature range of 40 DegreesC to 110 DegreesC U