Abstract: An improved bearing assembly adapted for use in a liner-hanger assembly, which bearing assembly comprises: an upper cylindrical race element having a lower cylindrical surface; a lower cylindrical race element having an upper cylindrical surface and having adjoining inside and outside side surfaces; a load-bearing, low coefficient-of-friction bearing-liner material secured between the lower cylindrical surface of the upper race element and the upper cylindrical surface of the lower race element; inside and outside sealing-liner material secured to the inside and outside side surfaces of the lower race element; and inside and outside sleeve elements secured to and extending from the upper race element and extending parallel with the inside and outside liner material and into a close slidable and sealing relationship thereto, thereby providing an improved bearing assembly which prevents drilling mud or other debris from contacting the load-bearing bearing-liner material between the upper and lower face elements