Cleaner head for a vacuum cleaner

CLEANER HEAD FOR A VACUUM CLEANER 5 A cleaner head 8 for a vacuum cleaner 2, comprising an agitator in the form of a brush bar 18, the brush bar 18 comprising a plurality of radially extending bristles 46 and a sealing material 52 disposed between the bristles 46. The sealing material 52 extends over substantially the entire circumferential and axial extent of the regions of the brush bar 18 between the bristles 46. The cleaner head 8 further comprises a housing 22 10 defining a chamber 24 which at least partially surrounds the brush bar 18, a dirty air inlet 68 in a lower part of the chamber 24 and a front opening that exposes the brush bar 18 at the front of the housing 22. The brush bar 18 is supported for rotation with respect to the housing 22 and arranged in the chamber 24 such that the brush bar 18 seals against the housing 22 thereby restricting flow of air through the front opening. [Figure 2]