WRG is a double acting dirt wiper consisting of a scraper part of low friction material, energized by 2 rubber O-rings. Wiper WRG is pressure activated. This wiper can be used in a great variety of environments. Our low friction materials are compatible with almost all media. It is a heavy duty dirt wiper recommended for outdoor systems. It is likely to be used in combination with our low friction bearing rings and sealing system. For long strokes a pressure release hole should be included between scraper and last seal. The scraper avoids dirt, water or ice to be trapped before the scraper. Especially cylinders with the rod upwards are suitable for this scraper.