This document specifies the required characteristics for heat-shrinkable polyolefin identification sleeving for use in aircraft electrical systems at operating temperatures between -55 °C and 135 °C. This specification is for the characterisation of identification sleeves only. This sleeving is flexible and flame retarded, and is available with 2:1 and 3:1 shrink ratios. The product is normally supplied with internal diameters up to 57 mm. The standard colours are white or yellow. Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this document if they comply with the property requirements listed in tables 3 and 4 except for dimensions and mass. As the sleeving to be tested is a printed article the complete system is to be recorded as part of the evaluation. The sleeve will only be considered as meeting the requirements of this specification if printed with the printer, ribbon, inks, and settings referenced within the test report. Mark adherence and print permanence are determined in this document using method EN 6059-407.