IEC 60684-3-121 Ed. 2.0 b:2001

Gives the requirements for four types of non-heatshrinkable sleeving, extruded from silicone elastomer. These sleevings are normally available with internal diameter up to 25 mm and in a range of wall thicknesses between 0,1 mm and 2,0 mm. National standards may select a restricted list of preferred combinations of internal diameter and wall thickness.