1.Competitive price with high quality 2.Lower noise ,high precision 3.Stock and prompt delivery 1.Usage: bearing balls for canner pump, magnetic drive pump. Vacuum pump, fixed anode X-ray tube shaft; bushing bearing for strong acid, strong alkali, salt, measure pumps, flow meter and deep well pump; bushing bearings for nonmagnetic to hydrofluoric acid. 2.Characteristic: resistance to strong acid, ...