The NB17402001 is a flexible, flame-retardant heat-shrink tubing from the RP-4800 series. It features a high 4:1 shrink ratio, allowing it to conform well to components and substrates with highly variable dimensions. This tubing has a continuous operating temperature range of -55°C to 135°C and requires a minimum full recovery temperature of 121°C. It is UL recognized for 600V at 125°C (black only) and meets military specification AMS-DTL-23053/5, Class 1. This product is well-suited for repairing harnesses or cables, as it can pass over large-diameter connectors and shrink down onto smaller-diameter jackets, providing robust insulation, abrasion resistance, and fluid resistance.