Abstract: A polymeric bushing is disclosed. The bushing may be constructed of a material comprising polyetheretherketone (PEEK), glass fibers, and polytetrafluoroethylene (PTFE). In one embodiment, the bushing material includes about 70% PEEK, about 20% glass fibers, and about 10% PTFE by weight. An inner bore in the bushing may be sized to provide a diametrical clearance of about 0.025 inch with a mating rotating shaft. The bushing is durable and wear-resistant, and exhibits low extractables and cytotoxicity. Accordingly, the bushing is particularly suited for use in equipment for processing blood products or the like. The bushing is especially useful for supporting a rotating boss sleeve on a separation rotor in a tubular centrifuge.