A splice sealing device including a first electric cable having an electrical conductor and an insulative cover, a second electric cable having a further electrical conductor and insulative cover, a junction joining the electrical conductors of the first and second electrical cables, a housing which has at least two housing parts mated to each other and which delimits an inner space for accommodating the junction, and a first cable exit in the housing. The first cable extends through the first cable exit, which includes a first chamber accommodating a first cable seal positioned on the first insulative cover of the first cable and sealing the first cable against the housing. The first cable exit is an integral part of a first housing part, and the first cable exit includes an annular wall axially delimiting the first chamber to the outside in extension direction of the first cable.