Brady PermaSleeve M4C-187-342 is a heat-shrink sleeve cartridge for permanent wire and cable marking. Its black-on-white surface gives printed identifiers a clear contrast, while the sleeve contracts around a conductor to keep the marking in place.
Made from B-342 heat-shrink polyolefin, the sleeve has a 3:1 shrink ratio. The cartridge provides 7 ft of continuous material, supplied at 0.187 in diameter, with a recovered diameter of 0.062 in. Brady lists it for wire sizes from 20 AWG to 10 AWG.
The material is described as self-extinguishing and resistant to extreme temperatures, UV light, chemicals, fuel and oil. It is compatible with Brady BMP41, BMP51, BMP53, M410, M510 and M511 printers.