This standard BS EN 60684-3-248:2007 Flexible insulating sleeving. Specifications for individual types of sleeving is classified in these ICS categories:
31.240 Mechanical structures for electronic equipment
29.035.20 Plastics and rubber insulating materials
IEC 60684-3-248:2007 gives the requirements for six types of general purpose, heat shrinkable dual wall polyolefin sleevings, flame retarded with nominal shrink ratios of 2:1, 3:1 or 4:1 and available in low and high temperature adhesive inner walls.