A sealant-filled enclosure for environmentally sealing a connection includes a first cover member and a second cover member. The first cover member defines a first cavity having a first bottom. The second cover member is pivotally connected to the first cover member for movement between an open position and a closed position. The second cover member defines a second cavity having a second bottom. A first sealant is positioned in the first cavity and extends up to a first level relative to the first bottom without a connection disposed in the first cavity. A second sealant is positioned in the second cavity and extends up to a second level relative to the second bottom without a connection disposed in the second cavity. The first and second levels together exceed a height from the first bottom to the second bottom in the closed position. The first and second sealants may be gels.