Brady ID M21-125-C-342 PermaSleeve Heat Shrink Wire and Cable Labels with Ribbon for M21 Printers, 1/8" Diameter, Black on White

Get reliable, long-lasting cable identification with Brady ID PermaSleeve heat-shrink wire and cable labels—designed to simplify installation and maintenance in security, surveillance, networking and low-voltage systems. These heat-shrink polyolefin sleeves produce permanent, crisp black-on-white markings when used with M21 printers and thermal transfer ribbon, improving readability for technicians and reducing downtime.

PermaSleeve sleeves feature a 3:1 shrink ratio that securely fits 22–16 AWG conductors (0.046–0.11" / 1.2–2.8 mm) and shrinks to a 1/8" finished diameter for neat, low-profile cable routing. Engineered for harsh conditions, they resist UV, chemicals, fuel, oil and extreme temperatures, and carry industry certifications including UL 224 and RoHS for dependable performance in mission-critical environments.

Whether you’re labeling patch panels, CCTV runs, control wiring or power cables, these sleeves deliver professional aesthetics and permanent identification that stands up to abrasion and fading. Ideal for security integrators, IT departments and contractors—order Brady ID PermaSleeve heat-shrink labels to streamline cable management and protect system documentation.

• Permanently mark wires and cables for quicker troubleshooting and compliant audits with abrasion- and chemical-resistant heat-shrink sleeves.
• Fast, professional results using Brady ID M21 printers and thermal transfer ribbon—prints crisp black-on-white text for high legibility in cabinets and racks.
• Engineered for harsh environments: UV, fuel, oil and extreme temperature resistance help protect identification in security, surveillance and networking installations.
• 3:1 shrink ratio fits 22–16 AWG (0.046–0.11" / 1.2–2.8 mm) and shrinks to a 1/8" finished diameter for secure, snag-free cable management.
• Industrial-grade certifications (UL 224, RoHS, SAE, MIL-STD) give assurance for mission-critical IT, low-voltage and monitoring systems.