Sealing system configured to allow the realization of a sealed electrical connection on a face of an item of electrical equipment, said sealing system comprising: a base comprising a first plate, said first plate comprising a through-orifice, the entire edge of the through-orifice being continuously comprised in a face of said first plate, a stopper comprising a second plate and a protruding part protruding from said plate of the stopper, said protruding part being designed to be inserted in the orifice of the base, a face of the second plate of the stopper coming into contact with a face of the first plate of the base, the second plate and the protruding part comprising at least one through-hole which is intended to allow at least one electrical wire to pass through, the at least one hole having a cross section smaller than that of the at least one electrical wire, said stopper having a greater flexibility than the flexibility of the base, such that, when the sealing system is positioned on a face of the item of electrical equipment and when the plate of the stopper butts against the plate of the base, the difference in flexibility allows the second plate of the stopper to be stressed against the first plate of the base, so as to ensure a compression of the second plate of the stopper contributing to the sealing of the item of electrical equipment, said protruding part of the stopper being configured to be force-fitted in the orifice of the base and the dimensions of the protruding part being equal to or greater than those of the orifice, the sealing system being configured to be inserted in a first cutout of corresponding dimensions provided in the face of the item of electrical equipment, such that a cover of the item of electrical equipment ensures that the second plate of the stopper butts against the first plate of the base. a base comprising a first plate, said first plate comprising a through-orifice, the entire edge of the through-orifice being continuously comprised in a face of said first plate, a stopper comprising a second plate and a protruding part protruding from said plate of the stopper, said protruding part being designed to be inserted in the orifice of the base, a face of the second plate of the stopper coming into contact with a face of the first plate of the base, the second plate and the protruding part comprising at least one through-hole which is intended to allow at least one electrical wire to pass through, the at least one hole having a cross section smaller than that of the at least one electrical wire, said stopper having a greater flexibility than the flexibility of the base, such that, when the sealing system is positioned on a face of the item of electrical equipment and when the plate of the stopper butts against the plate of the base, the difference in flexibility allows the second plate of the stopper to be stressed against the first plate of the base, so as to ensure a compression of the second plate of the stopper contributing to the sealing of the item of electrical equipment, said protruding part of the stopper being configured to be force-fitted in the orifice of the base and the dimensions of the protruding part being equal to or greater than those of the orifice, the sealing system being configured to be inserted in a first cutout of corresponding dimensions provided in the face of the item of electrical equipment, such that a cover of the item of electrical equipment ensures that the second plate of the stopper butts against the first plate of the base.