An interface for an enclosure comprises at least one enclosure wall that separates an enclosure interior from an enclosure exterior, an opening in the enclosure wall, and a recess in the enclosure wall. The recess adjoins the opening. A dielectric connector is configured to securely fasten to the enclosure wall. The connector extends into the recess. A seal is situated in the recess between the enclosure wall and the connector. An inserted member is inserted through the opening and surrounded by the seal and the connector. Where the connector is securely fastened to the enclosure wall, the seal is compressed to form a moisture-resistant barrier between the enclosure interior and the enclosure exterior.