Abstract: A splice protection sleeve flange includes means for clamping a cable, a seal interposed between two rings, one of which can move along the cable, and a frustoconical threaded part which is screwed into the flange and acts both on the moveable ring and on the clamping means. In another aspect, a device for clamping a cable includes a ring on which fingers are each mounted in the form of a hinge, the free end of each finger terminating in a claw turned inwardly towards the axis YY′ of the ring and, on the side of the plane where the fingers do not lie, there is provided a means which, by shape complementarity, is intended to cooperate with another clamping device of the same shape but having a ring diameter greater or smaller than a value equal to the largest radial dimension of the fingers.