For sealing and insulating solid dielectric wires and cable splices from moisture, use the reliable 3M 8420 Connector Insulator. Once sealed, it provides long-lasting resiliency and pressure, so it stands up to tough jobs. This connector is fantastic for insulating various secondary splices, including direct buried and submersible, and can also be used for dig-in repairs. It also offers physical protection from the elements for connectors or lugs, particularly for high-voltage or air-insulated types. This product is ANSI Certified and RoHS 2011/65/EU Compliant.