The FIT221V3/4-BLACK-5X4 is a flexible, 3/4 inch, black heat-shrinkable tubing designed for insulating and protecting wires and components. Made from durable cross-linked polyolefin, this tubing features a 2:1 shrink ratio and has an operating temperature range of -55°C to 135°C. It begins to shrink at a minimum temperature of 90°C and achieves full recovery at 121°C. The material is compliant with UL, CSA, and military specifications, and is also RoHS compliant. It is ideal for a wide range of applications, including electrical insulation, wire bundling, strain relief, and identification in various electronic and electrical assemblies.