The RNF-100-3/8-9-SP is a white, 3/8 inch heat-shrinkable tubing designed for general-purpose insulation, strain relief, and identification. It features a 2:1 shrink ratio, with a minimum expanded inside diameter of 9.5 mm (0.375 in) that shrinks to a maximum of 4.8 mm (0.187 in) after heating. This tubing operates over a temperature range of -55°C to 135°C and has a recovered wall thickness of 0.64 mm. Common applications include insulating wire terminations, jacketing light-duty harnesses, and color-coding electrical connections.