Multipole connector for the electrical interconnection of electrical cables comprising: - a containment body made of an electrically insulating material able to house a plurality of terminals made of an electrically conductive material connectable to a corresponding plurality of electrical cables, said containment body comprising a plurality of housing cavities able to insert said terminals and being coupleable to the containment body of another connector; - at least a closing element made of an electrically insulating material able to close said containment body after said terminals have been inserted; wherein: - said housing cavities are communicating with each other; - at least one of said containment body and said closing element comprises at least a through hole able to communicate with at least one of said housing cavities for the introduction of at least a sealing substance for sealing said housing cavities; - said containment body comprises a central axis, a first open axial extremity, a second open axial extremity and at least a median plane positioned between said first open axial extremity and said second open axial extremity and on which is formed a transversal base having passage openings, said terminals being insertable into said housing cavities through said first open axial extremity and being positionable in an assembly configuration wherein they pass through said passage openings; and - said containment body comprises at least a housing seat at least partially hollow able to house at least partially said closing element; characterized by the fact that said closing element comprises at least a transversal partition for closing said first open axial extremity and at least an elongated body which is insertable into said housing seat and along which said through hole is formed. - a containment body made of an electrically insulating material able to house a plurality of terminals made of an electrically conductive material connectable to a corresponding plurality of electrical cables, said containment body comprising a plurality of housing cavities able to insert said terminals and being coupleable to the containment body of another connector; - at least a closing element made of an electrically insulating material able to close said containment body after said terminals have been inserted; - said housing cavities are communicating with each other; - at least one of said containment body and said closing element comprises at least a through hole able to communicate with at least one of said housing cavities for the introduction of at least a sealing substance for sealing said housing cavities; - said containment body comprises a central axis, a first open axial extremity, a second open axial extremity and at least a median plane positioned between said first open axial extremity and said second open axial extremity and on which is formed a transversal base having passage openings, said terminals being insertable into said housing cavities through said first open axial extremity and being positionable in an assembly configuration wherein they pass through said passage openings; and - said containment body comprises at least a housing seat at least partially hollow able to house at least partially said closing element;