A radial roller bearing assembly, in particular for a needle bush (1), which substantially comprises a thin-walled outer ring (4), which can be inserted into a bore (2) or a housing (3), having two ribs (5, 6) directed radially inward, and a needle cage assembly (7) that is held in the outer ring (4) by said ribs (5, 6). According to the invention, the needle cage assembly (7) is formed by a needle cage (8) and a plurality of bearing needles (9) guided therein in the circumferential direction at regular distances, which roll on the inner shell surface (10) of the outer ring (4) and on the outer shell surface (11) of a shaft (12) to be borne or a separate inner ring. Furthermore, at least two seals (15, 16) are arranged axially next to the side surfaces (13, 14) of the needle cage (8) which protect the needle bush (1) from contamination from the outside and from the loss of lubricant. According to the invention, at least one of the seals (15 or 16) is formed as a multi-lip seal, made of an elastomer, consisting of a single ring, which extends over the part of the inner shell surface (10) of the outer ring (4) arranged between the related rib (5 or 6) of the outer ring (4) and the adjacent side surface (13 or 14) of the needle cage (8) and over the inner shell surface (17), the face (18) and the outer shell surface (19) of the rib (5 or 6).