Heat-shrink PermaSleeve sleeve for wire marking — Brady PermaSleeve Heat-Shrink

Brady PermaSleeve Heat-Shrink is a heat-shrink sleeve designed for reliable wire and component identification in electrical, control panel and industrial wiring applications. The sleeve shrinks to conform tightly around conductors and components when exposed to heat, creating a durable insulating layer while providing a stable surface for printed markings. Engineered to resist abrasion, moisture and oils, the PermaSleeve Heat-Shrink preserves legibility of labels and contributes to long-term circuit identification and safety.

Advantages

The heat-shrink construction ensures a snug fit across a range of wire diameters, reducing the risk of slippage and improving mechanical protection. The material provides enhanced resistance to environmental factors such as abrasion, moisture and oils, which helps maintain printed markings over time. Because the sleeve forms a tight, insulating barrier, it also contributes to electrical insulation and strain relief at termination points. The stable printing surface supports consistent label adhesion and legibility after heat application.

Suitable for

• Identification of single and multi-conductor wires in electrical installations
• Labeling of components, terminals and harnesses in control panels
• Industrial environments where resistance to abrasion, oil and moisture is required
• Applications requiring a durable, shrink-fit marking solution for maintenance and traceability

Key specifications

• Heat-shrink sleeve construction that conforms to wire and component shapes
• Durable printed surface suitable for labeling after heat shrinking
• Material resistant to abrasion, moisture and oils for extended legibility
• Provides electrical insulation and mechanical strain relief once shrunk
• Available in sizes to fit a range of wire diameters and component leads

How to use

Slide the PermaSleeve Heat-Shrink over the wire or component so that the area to be marked is covered by the sleeve. If using printed labels, apply the label to the sleeve before heat shrinking, following the label manufacturer’s instructions for adhesion. Apply heat evenly from a suitable heat source (heat gun or controlled oven) until the sleeve contracts uniformly and conforms to the substrate. Allow the sleeve to cool so the material sets and the printed surface stabilizes before handling.

Usage recommendations

Choose the sleeve size so that after shrinking the fit is snug but does not compress conductors excessively. Use a controlled, even heat source to avoid overheating and ensure uniform shrinkage. For best label performance, use compatible printing materials and allow adhesives to set prior to final installation in environments exposed to oils or high moisture.