Abstract: A self centering, floating brush seal assembly for a machine housing including a seal channel disposed circumferentially about a rotating shaft. The seal channel is typically configured to accommodate a ring seal. The ring seal is removed and a radially floating brush seal is installed in the seal channel but the brush seal is not fixed to the machine housing. The typical brush seal includes a front plate, a back plate, and a plurality of bristles sandwiched between the front plate and the back plate and having free radially extending ends disposed circumferentially about and contacting the rotating shaft. A radially extending rub feature is associated with at least one of the front plate and the back plate. The rub feature is disposed circumferentially about and contacts the rotating shaft.

Abstract: An axial and dynamic brush seal system wherein a mating ring is attached to a rotor and has a sealing surface. The bristles of the brush seal are disposed about the rotor and extend axially so that the terminal free ends of the bristles engage the sealing surface of the mating ring.

Abstract: A self centering, floating brush seal assembly for a machine housing including a seal channel disposed circumferentially about a rotating shaft. The seal channel is typically configured to accommodate a ring seal. The ring seal is removed and a radially floating brush seal is installed in the seal channel but the brush seal is not fixed to the machine housing. The typical brush seal includes a front plate, a back plate, and a plurality of bristles sandwiched between the front plate and the back plate and having free radially extending ends disposed circumferentially about and contacting the rotating shaft. A radially extending rub feature is associated with at least one of the front plate and the back plate. The rub feature is disposed circumferentially about and contacts the rotating shaft.