a rotary vacuum wicketting device has a stationary hub and a rotary hub that has a number of vacuum arms that carry plastic bags or similar work pieces from a first work station to a second work station . each of the rotary and stationary hubs has a main body portion and a split - disc wear plate , which is formed of a plastic synthetic resin that has been filled with a suitable lubricating agent . the radial arms also each have a removable wear strip carried on a forward surface . the wear plate of the rotating hub has an annular raised surface portion that slidably contacts the facing surface of the stationary hub wear plate .