Abstract: The invention relates to improvements to electric connectors particularly intended to be used in a liquid medium. Both elements (A,B) of the connector comprise respectively insulating bodies (8,20) carrying the contacts (9,21) and surrounded, in their front parts, by sleeves (14,24); two ring seals (25,26) are brought on those sleeves on either side of the interface (15,22) of the two insulating bodies and insulate said insulating bodies from the surrounding liquid.