Specification for flexible insulating sleeving; part 3: specification requirements for individual types of sleeving; sheet 246: heat-shrinkable sleeving, dual-wall, not flame-retarded, polyolefin

This document establishes technical requirements for thermally shrinkable double-layer polyolefin tubes that are non-flammable. It functions as a specific normative section within a broader series concerning flexible insulating tubing used in electrical applications. The specifications detailed herein address the material composition, dimensional tolerances, and performance criteria necessary for this particular type of tubing. It defines the expected behavior under thermal stress and outlines the criteria for ensuring electrical insulation integrity in various operating environments. The standard provides essential guidelines for manufacturers to produce consistent and safe products designed for protecting electrical conductors. It covers the necessary testing procedures to verify that the tubing meets the defined standards for shrinkage properties, dielectric strength, and resistance to flame propagation. Compliance with these technical specifications ensures that the final products are suitable for their intended industrial and commercial uses, providing reliable insulation where flexibility and heat resistance are critical factors.