Abstract: An underwater electrical connector having an electrically insulated contact chamber (21) receiving a pin (5) of a male coupling element in a contact area (41). A piston element (29) and the contact pin (5) slide in the contact chamber (21) in a sealingly connectable manner by at least two joints, one (45) placed near an opening (27) and the other (45?) downstream of the pin and the contact chamber contact area (9, 41). The surface of the piston element (29) between the two joints (45, 45?) is connected to a chamber filled with an electrically insulating fluid (49), arranged inside the connector element and connected to an external flexible wall element (51) deformable so as allow the introduction and removal of the contact pin (5). The contact area is filled with the electrically insulating fluid and separated from the remaining part of the connector by a third joint (47).

Abstract: The inventive electrical connector connectable in water comprises a rigid electrically insulated contact chamber (21) receiving the contact pin (5) of the connector male coupling element in a contact area (41), wherein a piston element (29) and the contact pin slide in said contact chamber (21) is such a way that they are sealingly connectable by at least two axially separated joints, one of which (45) is placed near said opening (27) and the second (45?) is placed downstream of the pin and the contact chamber contact area (9, 41) with respect to the opening (27), the surface of the piston element (29) between two joints (45, 45?) is connected to a chamber which is filled with an electrically insulating fluid (49), is arranged inside the connector element and is connected to an external flexible wall element (51) deformable in such a way that it makes it possible to introduce the contact pin (5) into the contact chamber (21) or to remove it therefrom, and the contact area is also filled with the electrically