Embodiments of the present disclosure provide a device for sealing an electrical connection between an electrical conductor having PVC or silicone insulation with an exposed end not covered by the insulation, and a contact element electrically connected to the electrical conductor, the contact element being covered by a jacket of semi-crystalline thermoplastic material except in an exposed bonding area, the device comprising a sleeve-shaped adapter made of semi-crystalline thermoplastic material, the sleeve-shaped adapter comprising a gasket surrounding the electrical conductor in an end area of the insulation; and an overmold made of a thermoplastic or terpolymer elastomer, the overmold covering the exposed end of the electrical conductor, the exposed area of the contact element, at least portions of the adapter, and at least portions of the jacket of the contact element.

According to embodiments of the present disclosure, the device also includes an overmold of a thermoplastic or terpolymer elastomer that covers the exposed end of the conductor, the exposed portion of the contact element and at least portions of the adapter and of the jacket of the contact element.

According to embodiments of the present disclosure, a thermoplastic elastomer is proposed wherein selecting the appropriate adapter material and providing its own seal eliminates the material limitations, making it possible to select a material for the overmolding process that adheres uniformly to both ends (contact element and adapter).