IEC 60684-3-216 Ed. 1.2 b:2013

IEC 60684-3-216:2001+A1:2005+A2:2013 Gives the requirements for four types of heat-shrinkable, flame-retarded, limited-fire-hazard sleeving with a thermal endurance rating of 105 °C as shown below:
Class A: thin wall, shrink ratio 2:1, internal diameter up to 102,0 mm;
Class B: medium wall, shrink ratio 2:1, internal diameter up to 60,0 mm;
Class C: thick wall, shrink ratio 2:1, internal diameter up to 51,0 mm;
Class D: medium wall, shrink ratio 3:1, internal diameter up to 40,0 mm
Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. This consolidated version consists of the first edition (2001), its amendment 1 (2005) and its amendment 2 (2013). Therefore, no need to order amendments in addition to this publication.