Patent ID: 8459652

Claim:
A single stage annular brush seal for a turbo machine for sealing off a gap between a rotating component and a stationary component of the turbo machine, comprising: a front plate and a back plate, elastically flexible bristles provided in a plurality of bristle rows arranged next to one another between the front plate and the back plate, wherein the plurality of bristle rows comprise at least three circumferentially-arrayed bristle rows; a first film or a first disk arranged circumferentially between first and second bristle rows of the at least three bristle rows, wherein the first film or the first disk consists of a material having abrasive properties, wherein the first film or the first disk has a closed surface; and a second film or a second disk arranged circumferentially between the second and a third bristle row of the at least three bristle rows, wherein the second film or the second disk consists of the material having abrasive properties, wherein the second film or the second disk has a perforated configuration with through orifices in at least portions thereof, and wherein the first film or the first disk and the second film or the second disk and the at least three bristle rows have a same height and length.