RS PRO Heat Shrink Tubing Blue 50.8 mm Diameter x 1.2 m Length 2:1 Ratio Polyolefin Flame Retardant 397-972

The RS PRO 397-972 Heat Shrink Tubing is a high-performance solution for electrical insulation and protection of cables, wires, and in-line splices. This blue tubing features a 50.8 mm sleeve diameter in its unshrunk state and is supplied in a 1.2 meter length. Made from flexible, flame-retardant polyolefin, it delivers a 2:1 shrink ratio, meaning it shrinks to half its original diameter when exposed to heat. Such shrinkage ensures a tight, reliable seal over irregular cable shapes and joints.

This tubing is designed for a wide range of technical and industrial applications. Its excellent electrical insulation properties prevent short circuits, while the robust material resists common fluids and solvents, mechanical wear, moisture, and dust. The tubing also provides mechanical strain relief, reducing the risk of damage to cable terminations from vibration or flexing. Colour coding is facilitated by its distinctive blue color, which helps with cable identification and organization in complex installations.

The RS PRO 397-972 model is flame retardant for increased safety and meets multiple international standards, including ASTM, UL, and MIL, supporting its use in demanding environments such as manufacturing, automotive, military, aerospace, electronics assembly, and construction. The tubing is not halogen-free but offers high reliability in situations where fire performance and insulation are required.

Installation is straightforward: simply cut the tubing to the required length, slide it over the target, and apply heat. A minimum temperature of 90°C is required to achieve shrinkage, with full operational performance maintained from -55°C up to +135°C, and resistance to 200°C for short exposures. The design supports a wide array of uses, such as electrical insulation over resistors or capacitors, protection against environmental contaminants, bundling and organizing harnesses, protecting repairs, and providing effective mechanical protection in industrial environments.

Typical areas of use include electrical panels, wire harnesses, control cabinets, and cable runs in industrial, laboratory, automotive, railway, electronics manufacturing, and construction sectors. The product is manufactured in Japan, ensuring consistent quality control and material performance.

Choose RS PRO Heat Shrink Tubing 397-972 for professional-grade insulation, mechanical protection, and long service life on your critical cable installations. Explore more cable management solutions and related RS PRO products in the Heat Shrink Tubing category.