Double-wall heat shrink tubing

? Fuel double-wall heat shrink tubing? (3: 1, 4: 1) with an inner layer of hot melt semi-flexible heat shrink tubing. The outer layer is made of radiation cross-linked polyolefin inner layer is specially designed plastic inner wall; the inner wall of the melt when heated, and with the outer wall of the pores or shrink to fill the gap, after cooling, double-walled pipe wall thickness, solid. Widely used in electronic equipment wiring waterproof, sealed at the wire branch fixed metal pipe corrosion protection and to prevent loosening of the resulting polymer chain slack and off, such as underwater lighting, automotive tubing, advanced wiring harness. .? By UL224 certification Features shrink ratio: 3: 14: 1 shrink rate:? Fast commonly used colors:?? Red, orange, yellow, blue, green, white, black (common) temperature continuous use temperature range: -55 ℃ ~ 125 ℃ lowest initial shrinkage temperature:? 80 ℃ Minimum fully recovery temperature:? 120 ℃ Technical Specifications Technical Data Property Test Method No. Test Item Test Method Typical Value 1 test results Tensile Strength Tensile Strength ASTM D638 14 N / mm2 2 Elongation at Break Ultimate Elongation ASTM D638 460% 3 thermal shock Heat Shock @ 250o C UL 224 passes 4 by low-temperature test Cold Bend @ -30oC ASTM D2671 passes 5 through flame-retardant Flammability UL 224, VW-1 through passes 6 Breakdown Strength Dielectric Strength ASTM D149 15kV / mm 7 Volume resistivity Volume Resistivity ASTM D257 1x1014Ω? cm 8 longitudinal shrinkage Longitudinal Change ASTM D2671 Inside +/- 10% 9 Water Absorption Water Absorption ASTM D570 <0.5% Specifications Product dimensions No. Specification SIZE mm minimum inside diameter before contraction after contraction after contraction maximum diameter mm thickness mm substrate layer thickness shrinkage mm IN MM 1 1/8 3.18 3.18 1.02 1.02 0.51 2 3/16 4.75 4.75 1.57 1.02 0.51 3 1/4 6.35 6.35 4 3/8 9.53 2.03 1.02 0.51 9.53 3.05 1.40 0.62 12.70 12.70 5 1/2 6 3/4 4.06 1.78 0.76 19.05 19.05 6.35 2.16 0.89 71 25.40 8.13 2.54 25.4 1.02 81-1 / 2 38.10 38.10 12.95 2.54 1.02