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Continuous yellow heat-shrink sleeve with black print, 3/8 in wide, 7 ft roll

Brady

Brady BMP21 B-342 PermaSleeve 3/8 in x 7 ft Black on Yellow

SKU CH-6SES-FN9FT MPN BMP21

Heat-shrink polyolefin sleeves mark wires from .125 to .32 in and withstand -67 to 267 °F

  • Product typeEmergency Exit Signs & Lights Accessories
  • Black on Yellow print for high-contrast wire identification
  • B-342 PermaSleeve polyolefin shrinks 3:1 for a tight fit
  • Continuous roll feeds BMP21 printers without label waste
  • Withstands -67 °F to 267 °F for harsh environments
  • Fits wire diameters from .125 in to .32 in

Wire-marking sleeve roll

Continuous B-342 PermaSleeve tubing prints individual markers on a Brady BMP21, BMP21-PLUS or BMP21-LAB printer and shrinks 3:1 to grip wires from 0.125 in to 0.32 in. The polyolefin sleeve survives temperatures from -67 °F to 267 °F and supplies black text on a yellow background.

Electrical and datacom installers

Technicians who need durable, heat-shrunk identification for control panels, harnesses or fibre runs will find the continuous format efficient. Installers who require pre-cut lengths, coloured legends or a cartridge that fits non-Brady printers cannot use this roll.

3/8 in nominal width

The 375 designation confirms a 3/8 in flat width that covers the stated wire range after shrinking; verify your conductor diameter falls between 0.125 in and 0.32 in before ordering.

How it compares

Measured against everything we stock in Emergency & Hazard Lighting, at today’s prices. Recalculated every night.

Price $62.99
Pricier than about 75% of the 1,162 comparable items (median $30.99).

Specifications

Product
Brand nameBrady
Product typeEmergency Exit Signs & Lights Accessories

Questions about this item

What comes in the box and what do I need to buy separately?

The box contains one continuous roll of B-342 PermaSleeve heat-shrink polyolefin sleeves, 3/8 in wide by 7 ft long, black print on yellow. You will need a compatible Brady printer such as the BMP21, BMP21-PLUS, BMP21-LAB, ID Pal or Lab Pal to print and cut the labels.

Which sleeve size should I choose for my wires?

This 375 size fits wires from .125 in up to .32 in diameter. Select it when your wire falls in that range; other diameters require a different sleeve size.

What does the 3:1 shrink ratio mean once the sleeve is on the wire?

A 3:1 ratio means the tubing shrinks to one-third of its supplied diameter when heated, conforming tightly to the wire. The material withstands -67 °F to 267 °F, so the marking stays legible in extreme temperatures.

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