Insulate secondary splices and submersible, dig-in and direct buried repairs easily with the quick-to-install 3M 8420 Cold Shrink Connector Insulator. This environmental sealing insulator installs without tools and retains its resiliency and pressure over time, providing moisture-tight sealing to protect your wires and cable splices from water damage. Use this tubular, open-ended sleeve to protect high-voltage air-insulated lugs and connectors and for environmental sealing of communications wires and other nonelectrical applications. This connector insulator is ANSI Certified and RoHS 2011/65/EU Compliant.