DIN EN 4708-101:2017-08

The DIN EN 4708 series of standards describes heat-shrinkable sleeving for binding, insulation and identification for use in the aerospace industry. The standard describes the required characteristics for four types of heat-shrinkable polyolefin sleevings for use in aircraft electrical systems at operating temperatures between - 55 °C and 135 °C. Type A: Very flexible, flame retarded, shrink ratio 2:1 It is suitable where sensitive components and delicate wiring need protection from excessive heat during shrinking. Type B: Flexible, flame retarded, shrink ratio 2:1, 3:1 and 4:1 It is suitable for general purposes. Type C: Flexible, not flame retarded, shrink ratio 2:1 and 3:1. Type D: Semi-rigid, flame retarded, shrink ratio 2:1 It is suitable where strain relief and mechanical support are required These sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1 and 4:1 and up to 39 mm for shrink ratios of 3:1 and in the following colours for type B, black, brown, red, yellow, green, blue, orange, violet, grey, white and green/yellow. Types A and D are black only. Type C is transparent, is not flame retarded and does not meet the flammability requirements of EN 4708-001. Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 5, 6 and 7 except for dimensions and mass. The standards of the EN 4674 series are prepared by the ASD-STAN, Technical Section Electrotechnology, with the participation of German experts from DIN Standards Committee Aerospace (NL). AeroSpace and Defence Industries Association of Europe - Standardization (ASD-STAN) has been declared responsible by the European Committee for Standardization (CEN) for preparing European Standards (EN) for the field of aerospace. The responsible German standardization committee is Working Committee NA 131-04-08 AA "Installationskomponenten" ("Installation components") at the DIN Standards Committee Aerospace (NL).