... fixed anode X-ray tube shaft; bushing bearing for strong acid, strong alkali, salt, measure pumps, flow meter and deep ... pump; bushing bearings for nonmagnetic to hydrofluoric acid. 2.Characteristic: resistance to strong acid, strong alkali, salt and gas of ... deleterious. Especially resistance to hydrofluoric acid, long life, high hardness, resistance to we wearsliding bearingWe ...