The B33-187-2-342-2 is a B-342 PermaSleeve marker, a heat-shrinkable tubing designed for wire identification and insulation purposes. This marker is made from irradiated polyolefin with a 3:1 shrink ratio and is sized for a wire diameter range of 0.062 to 0.150 inches (1.57 to 3.81 mm). It is compatible with thermal transfer and dot matrix printing technologies for creating durable labels. The sleeve has an operating temperature range of -55°C to +135°C and is qualified to SAE AS23053/5 (Class 4). It is a UL Recognized Component, making it suitable for applications requiring permanent and legible wire marking and insulation.