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Brady M21-187-C-342 PermaSleeve Wire Markers
The Brady M21-187-C-342 PermaSleeve® heat shrink markers provide a comprehensive solution for combined wire insulation and durable identification. Manufactured from B-342 irradiated polyolefin tubing, these markers are self-extinguishing, flame-retardant, and resistant to fading. With a 3:1 shrink ratio, the tubing securely encapsulates wires ranging from 20 to 10 AWG when applied with an industrial-grade heat gun.
This drop-in cartridge contains a continuous 7-foot roll of black-on-white printable marker sleeve, specifically designed for seamless operation with Brady BMP21 series, ID PAL, and LabPal portable label printers.
Technical Specifications
| Manufacturer Model | M21-187-C-342 |
|---|---|
| Material | B-342 Irradiated Polyolefin |
| Wire Gauge Compatibility | 20 to 10 AWG |
| Sleeve Diameter | 0.187 in |
| Roll Length | 7 ft |
| Shrink Ratio | 3:1 |
| Color | Black Text on White Sleeve |
| Printer Compatibility | BMP21 Series, ID PAL, LabPal |
Frequently Asked Questions
What wire sizes are compatible with the M21-187-C-342 sleeve?
This specific 0.187-inch PermaSleeve marker is designed for cables and wires ranging from 20 AWG to 10 AWG.
Which label printers support this cartridge?
The M21-187-C-342 cartridge is compatible with Brady BMP21 series printers, as well as legacy ID PAL and LabPal models.




