The invention relates to rotating sealing device for the passage of a fluid, including at least one seal positioned between a fixed support and a crown mounted able to rotate with respect to the support. This device is characterized in that the seal is constituted by a ring mounted able to slide in a groove in the fixed support and which incorporates a front face intended to come into contact with a bearing surface of the rotating crown, the incorporating on each of its internal and external cylindrical surfaces at least one ring-shaped groove intended to accommodate an O-ring seal. The ring can, additionally, by pressed against the bearing surface by positioning means exerting a thrust force on the rear face of the ring. The invention applies in particular for a system to inflate the tires of vehicles.