Abstract: A connector box includes a female box element into which can be fitted a male box element, as well as a retaining device cooperating with a stop acting in a given zone of the periphery of the box elements, in order to maintain the male box element fitted into the female box element in a coupled position, one of the two facing surfaces of the two box elements having an increasing cross-sectional area having a generating line coming to bear against a generating line of the facing surface of the other box element and situated in an axial plane passing through the given zone, the greater cross-sectional area having a complementary shape with the facing cross-sectional area of the other box element when the two elements are completely coupled.

Abstract: Disclosed is a connector casing made watertight by the addition of a seal. It is made up of a first casing element (1) mating with a second casing element (2). The first casing element is designed with a hook (3) which retains a stop (4) integral with the casing element (2) which is equipped with a lip seal (5) of asymmetrical section and prevented from rotating by an indexing lug (6). The front of the casing element (1) has a change of level (6) which partially embeds the lip seal.