3M™ Heat Shrink Heavy Duty End Caps are used to seal cable ends and help provide moisture, mechanical and environmental protection. They are intended for heavy duty applications. The end caps are RoHS compliant (2011/65/EU).When heated in excess of 121C (250F), 3M Heat Shrink Heavy Duty End Caps rapidly shrink, forcing the melted adhesive lining to flow and cover the substrate. The adhesive forms a flexible bond with a wide variety of rubbers, plastics and metals. Upon cooling, the adhesive solidifies, forming a permanent, non-drying, flexible and water resistant barrier. Adhesive reflow will occur at temperatures above 80C (176F). 3M Heat Shrink Heavy Duty End Caps are manufactured from semi-rigid flame retardant, cross-linked polyolefin. They are supplied with a factory applied adhesive lining for reliable environmental sealing. Six different sizes accommodate a broad range of cable diameters.