A brush ring for a roller brush in a cleansing machine includes a ring with U-shaped cross section and having openings with upstanding walls into which the bent-over ends of the hairpin-like bristle bundles are thrust. The bent-over bristles are free inwards of the inside of the ring, and a locking wire is taken through these ends to form a locking wire ring on the inside of the annular bar for reliably retaining the bristle bundles in the openings when the ring is rotated during operation.