IEC 60684-3-271:2011 gives the requirements for four types of heat-shrinkable, flame retarded, fluid resistant, elastomer sleevings, nominal shrink ratio of 2:1. - Type A: standard wall thickness for use at temperatures up to 120 °C - Type B: thin wall thickness for use at temperatures up to 120 °C - Type C: standard wall thickness for use at temperatures up to 150 °C - Type D: thin wall thickness for use at temperatures up to 150 °C. The significant technical change from the previous edition is the addition of a type of sleeving suitable for use at temperatures up to 150 °C. This edition includes the following significant technical change from the previous edition: the addition of a type of sleeving suitable for use at temperatures up to 150 °C.