Abstract: A device to limit pre-rotation of fluid across turbomachinery regions where significant pressure differentials exist between rotating and non-rotating components. In one form, the present invention is particularly applicable to centrifugal-based turbomachinery. Of particular concern is that the highly-energized fluid exiting an impeller or related rotating member can impart significant swirl velocity and related rotordynamic forces which in turn may impact rotor stability. The potential for such instability is particularly high when flow coming from an impeller discharge permeates a seal, bushing or related component that is used to fluidly separate the impeller from an upstage partition. The present invention replaces traditional bushing seal designs at swirl-prone regions with a vaned anti-swirl bushing that fits within the housing without increasing the axial or radial dimensions of the housing.