Sealing device of the gland type for a cable

A sealing device for the passage of a submarine cable having a cable jacket from a high-pressure volume corresponding to surrounding water into a low-pressure volume, particularly for a cable subjected to dynamic stresses, comprising:

• a gland box system with at least two individual packing elements each of the at least two individual packing elements in the form of an annular body made of an elastomer, having an inside diameter, compressed axially within a gland box for the purpose of it being clamped radially inward against the cable jacket and outward against the gland box;
• and
• washers being inserted within the gland box between the at least two individual packing elements,
• wherein an individual packing element of the at least two individual packing elements closest to the high-pressure volume is a unitary element comprising an annular body extended, along its inside diameter, from inside the gland box into the high-pressure volume by an integral sleeve portion which has a cuff that surrounds and elastically grips the cable jacket from the inside of the gland box into the high-pressure volume,
• wherein the gripping of the cuff is reinforced outside the gland box by the pressure in the high-pressure volume exerted on the sleeve portion.