Wipers

Sealing elements intended for prevention of solid particles from entering a hydraulic or lubrication system are referred to as wipers or dirt scrapers. There are also scrapers used for preventing liquids from penetrating and sometimes both tasks have to be fulfilled simultaneously. There is usually no hydraulic pressure applied to a scraper. It is imperative to have the scraper in a stable position in the groove, which can be improved by additional axial or radial support.