Patent ID: 7862047

Claim:
A brush seal for sealing off components movable relative to one another with respect to a reversible pressure difference, comprising: a bristle housing; and bristles engaged in the bristle housing; wherein the bristles are included in a first bundle and a second bundle and the bristle housing includes a first housing half and a second housing half divided by a separating plate, wherein the first bundle is engaged in the first housing half and the second bundle is engaged in the second housing half; wherein the first housing half has a first leg with a first supporting surface and the second housing half has a second leg with a second supporting surface, wherein the first and second legs are inclined toward the separating plate, and wherein the first and second supporting surfaces are located at respective distal ends of the first and second legs and have a different angle of inclination than respective surfaces of the first and second legs; and wherein, in an operational configuration, when a pressure difference in a gap between the components is in a first direction, the first bundle engages with only the first supporting surface to seal the gap between the components and wherein when the pressure difference in the gap is in a second direction, which second direction is opposite the first direction, the second bundle engages with only the second supporting surface to seal the gap between the components.