1. Flexible insulating sleeving. Specifications for individual types of sleeving. Sheet 214: Heat-shrinkable, polyolefin sleeving, not flame retarded, thick and medium wall Part 3-214, (23rd October 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗