Gives the requirements for three types of E-type glass sleeving using either braided or knitted construction with a continuous acrylic based coating, and differentiated by their breakdown voltage: high breakdown voltage (sheet 403), medium breakdown voltage (sheet 404) and low breakdown voltage (sheet 405). These sleevings have been found suitable for use at temperatures up to 155 °C.

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.