Flame-retardant Double Wall Heat Shrink Tube 1.Shrink ratio:4:1 2.Elongation:200% 3.Hot-melt adhesive 4.Waterproof ... ,RoHS Product Introduction:Flame-retardant Dual Wall Heat Shrinkable Tube is flexible, flame-retardant polyolefin heat shrink dual-wall ... mechanical strength, sealing, oil-resistance and insulation properties.Features:1. Out layer: Cross-linked modified polyolefin Liner: Flame-retardant ...