Add insulation to your direct buried or submersible dig-in repairs and secondary splices with this 3M 8420 Cold Shrink Connector Insulator. Moisture is never an issue because the rubber insulator features a tight-fitting seal. It's crafted for use on cable splices and solid dielectric insulated wires and is a great choice for a layer of physical protection on air-insulated high-voltage lugs and connectors. ANSI Certified and RoHS 2011/65/EU Compliant, this cold shrink insulator sustains impressive pressure and resiliency for added reliability and peace of mind.