3M EC-3 Cold Shrink End Caps

3M EC-3 Cold Shrink End Cap is a black EPDM rubber, close-ended sleeve from the EC-Series that arrives factory-expanded and mounted on a removable core for quick installation. It provides an environmental seal and mechanical protection for cables, pipes, and other cylindrical objects by shrinking around the end once the core is removed. Designed for end diameters of 1.02 to 1.94 inches (26.0 to 49.2 mm), the EC-3 is typically packaged in cases of 10 end caps. To install, place the sleeve over the prepared end, withdraw the core, and allow the rubber to contract to a tight, weather-resistant closure. This EC-Series end cap is intended for applications where a closed-end seal is required to resist moisture, dirt, and debris in electrical and related installations. The EC-3 designation identifies this specific size range within the 3M Cold Shrink End Cap lineup, offering a straightforward installation method for terminating and protecting ends of cables and other cylindrical components. Within the EC-Series, EC-3 targets a 1.02–1.94 in (26.0–49.2 mm) diameter range.