Arrangement for sealing without contact a gap in the runout of a roll

An arrangement for sealing without contact a gap between a separating means and a work roll in a runout of a roll stand for rolling rolled material, the work roll having an axis and a surface, the rolled material having a width and a surface, the arrangement comprising a separating element mounted at an end of the separating means, the separating element being arranged so as to extend approximately tangentially relative to the surface of the work roll and at a relatively small distance from the surface of the work roll and from the surface of the rolled material, the separating element having at least one supply duct for compressed air connected to a compressed air source, wherein the supply duct has at an end thereof a slot-shaped nozzle for blowing air in a blowing-out direction, the slot-shaped nozzle having an opening and being located at a small distance from the roll surface and extending along the rolled surface in the direction of the roll axis, the blowing-out direction of the slot-shaped nozzle and a line extending from the nozzle opening perpendicularly relative to the axis of the work roll including an angle of between 0.degree. and 45.degree. in a direction of rotation of the roll, the separating element having at a front side thereof an end portion with a tip and a thickness, the end portion extending approximately tangentially relative to and at a small distance from the roll surface, wherein the thickness of the end portion decreases toward the tip, such that a flow channel is formed between the end portion and the roll surface, wherein a width of the flow channel increases steadily away from the tip in the manner of an injector, and wherein the flow channel extends at least over the width of the rolled material parallel to the axis of the work roll.