RS PRO Heat Shrink Tubing, Yellow, 3.2 mm Sleeve Diameter, 1.2m Length, Polyolefin, 2:1 Shrink Ratio 399-502

RS PRO 399-502 Heat Shrink Tubing in yellow is designed for demanding industrial, automotive, electronics, and construction applications where high-performance cable protection and insulation are required. This tubing features a 3.2 mm sleeve diameter and a length of 1.2 meters, providing ample coverage for various wire sizes and connection points. It is manufactured from durable, flexible polyolefin and offers a precise 2:1 shrink ratio, meaning the sleeve shrinks to half its original diameter when heated, ensuring a secure, tight fit over splices, terminals, and exposed conductors.

The yellow colour is especially useful for colour-coded identification in complex wiring looms, control panels, or equipment assemblies. Its flame-retardant nature enhances safety by minimizing fire risks, making it suitable for mission-critical electrical environments. The tubing is engineered for longevity with resistance to common industrial fluids, solvents, moisture, and mechanical abrasion, ensuring that wires and components remain well-protected in harsh conditions.

Application is straightforward: simply cut the required length, position over the cable or joint, and apply heat to activate the shrink response. Upon shrinking, the tubing provides an environmental and electrical insulation barrier, supporting the protection of resistors, capacitors, and connector joints. It can also be used to repair or reinforce worn insulation, bundle wires, and provide mechanical strain relief, particularly in installations subject to frequent flexing or movement.

The operational temperature range for the RS PRO 399-502 is from -55°C to +135°C, with a short-term tolerance up to 200°C, accommodating a wide scope of industrial and technical requirements. It complies with several international safety and performance standards, including UL 224 VW-1, IEC 60684-3-212, CSA C22.2, and others, ensuring reliability in regulated environments such as military, aerospace, and transport industries.

This tubing is not halogen-free; however, its polyolefin composition ensures easy installation, rapid shrinkage, and robust, long-lasting protection. Its versatility and compliance credentials make it the preferred choice for engineers and technicians seeking trustworthy cable sleeving solutions for maintenance, upgrades, and production deployment.

Industries and applications served include electronics manufacturing, industrial controls, panel building, electrical maintenance, laboratory instrumentation, and automotive cable harnesses. Explore more RS PRO cable protection solutions in the Heat Shrink Tubing category at EnvMart.