The NB13542001 is a 3/64 inch, black, flexible polyolefin heat-shrink tubing from the RNF-100 series, designed for general-purpose applications. It features a 2:1 shrink ratio, shrinking from a minimum supplied internal diameter of 1.2 mm to a maximum of 0.6 mm after heating, resulting in a recovered wall thickness of 0.40 mm. This tubing operates over a wide temperature range of -55°C to 135°C and requires a minimum temperature of 121°C for full recovery. As a colored, flame-retardant tubing, it provides superior abrasion resistance and conforms to irregular shapes. Common applications include providing insulation and strain relief for wire terminations, jacketing light-duty harnesses, and color-coding electrical connections.