3M™ Cold Shrink Silicone Rubber 3/C Cable Breakout Boot 8563 has a 0.82-1.18 in (20.8-30.0 mm) phase shield range and a 1.92-3.10 in (48.8-78.7 mm) outer jacket range. It is an open-ended molded rubber sealing assembly that has been factory expanded and mounted on a removable plastic core.
3M™ Cold Shrink Silicone Rubber 3/C Cable Breakout Boots 8561 through 8566 are a series of open-ended molded silicone rubber sealing assemblies that are factory expanded and mounted on removable inner supporting plastic cores. They are supplied for field installation in a pre-stretched condition. The supporting cores are removed after the seal has been positioned for installation around the breakout area of a 3/C (three conductor) cable. Core removal allows the silicone rubber boot to shrink down to a predetermined diameter, creating an environmental enclosure for individual cable phase legs and overall cable jacket.