Bearing assembly of large diameter or of the slewing type, including an inner ring and an outer ring, at least one sealing ring with an axis installed on one of the inner and outer rings, for sealing a gap between the inner and outer rings and comprising: a lip portion designed in rubbing contact with the other of the inner and outer rings, a root portion at least partly engaged with an interference fit inside a holding recess arranged on a stabilizing surface of the one of the inner and outer rings, the root portion having a main lip and at least one secondary lip, the lips applying a contact pressure inside the holding recess in order to anchor the root portion on the one of the inner and outer rings, characterized in that the holding recess comprises two blocking grooves inside which the main lip is engaged with a contact pressure.