If you're looking to insulate direct buried or submersible, dig-in repairs as well as secondary splices in moisture-tight sealing, look to our tough 3M 8420 Cold Shrink Connector Insulator. It provides reliable physical protection of high-voltage, air-insulated connectors and lugs. Durable EPDM rubber construction keeps this connector insulator resilient and maintains its pressure, and it contains no dangerous chlorides or sulfur. This cold shrink insulator is ANSI Certified and RoHS 2011/65/EU Compliant and doesn't require any tools, making it easy to install.