adhesive heat shrinkable tube Adopt Flame retardant,cross-linked polyilefin,with an inner coating of hot-melt adhesive and an outer layer that shrinks to provide electrocal and mechanical protection.Insulates and seals a variety of electrical wirings. 1.operating Temperature:45~125; 2.Shrink Temperature:Start at 70;shrunk totally at 120; 3.Inner layar glue melt temperature:70~90; 4.Shrink ratio:3:1,4:1,Longnitudinal Shrink radio≤±8%; 5.Waterproof,RoHScompliant. 6.Standard color: Black(Other color available upon request.) 7.Approvals: UL,RoHS