Abstract: A wiper plug has a elastomeric fin assembly straddled by centralizers that have the capacity to flex through restrictions while being strong enough to centralize and scrape a surrounding tubular wall. The centralizers reduce wear on the rib/fin assembly particularly on long horizontal runs. The centralizers can be a continuous spiral or a series of circumferentially offset spiral segments on a common hub. The spiral segments contain brushes extending from a base where the base and the mounting slot have a dovetail relationship for fixation to the wiper plug body. The plug body consist of three separate segments that are threaded together in order to trap the brush segments in the dovetail channels.