The 3PS-187-2-WT is a B-342 PermaSleeve® heat shrinkable tubing marker used for identifying and insulating wires. Constructed from irradiated polyolefin, this marker features a 3:1 shrink ratio and is designed for wires with a diameter range of 0.062 to 0.150 inches (1.57 to 3.81 mm). It has a wide operating temperature range of -55°C to +135°C and is a UL Recognized Component under file E333786. The material is qualified to SAE AS23053/5 (Class 4) and supports thermal transfer and dot matrix printing for durable marking. These characteristics make it ideal for applications requiring robust and permanent wire labeling in various industrial settings.