B33D-500-2-342 is a PermaSleeve PS polyolefin heat-shrinkable wire marking sleeve designed for wire identification and protection applications. This white B-342 material sleeve features a 3:1 shrink ratio and fits wire gauges approximately 8 to 0 AWG, accommodating wire diameters from 0.187 in (4.8 mm) to 0.450 in (11.4 mm). The sleeve has a diameter of 0.500 in (12.7 mm) and a wall thickness of 0.150 in (4.7 mm), with a material thickness of 0.25 in (0.6 mm) ±0.03 in (0.07 mm). It operates within a service temperature range of -40°F to 267°F and meets military/industrial specifications including SAE-AMS-DTL-23053/5C (class 1), SAE-AS-81531, and MIL-STD-202. This fade-resistant and flame-retardant sleeve is ideal for industrial wire marking, cable bundling, and wire protection in demanding environments.