This International Standard gives the requirements for one type of heat shrinkable, semiflexible, polyvinylidene fluoride, flame retarded, fluid resistant sleeving that has been found suitable for use up to temperatures of 150 °C. The nominal shrink ratio is 2:1. This sleeving is normally supplied in internal diameter sizes up to 25,4 mm and is transparent. Sizes or colours other than those listed in this standard may be available as custom items. These items are considered to comply with this standard if they fulfil with the property requirements listed in Tables 2, 3, and 4, excluding dimensions, colours and mass. 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.