LDH type wiper seal (dust seal) is an external protective sealing element fitted at the gland of hydraulic cylinders. Its primary function is to scrape away dust, mud, grit, water and other impurities adhered to the piston rod during reciprocating motion. It stops external contaminants from entering the cylinder, safeguarding the main rod seals and hydraulic system against abrasive wear and premature breakdown.
Made of premium polyurethane raw material, the LDH wiper seal features excellent wear resistance, good flexibility and powerful scraping capacity. Its precision lip profile keeps consistent contact with the rod surface without scratching the rod. The optimized cross-section maintains stable dimension under tough outdoor working environments and avoids permanent deformation. It operates reliably within the temperature range of -30℃ to 100℃.
Compatible with mineral hydraulic oil and most conventional hydraulic fluids, LDH dust wiper seals are extensively used on excavators, loaders, forklifts and other heavy-duty construction hydraulic cylinders. It fits standard seal groove dimensions for convenient installation and direct replacement. By blocking external pollutants and prolonging the lifespan of the whole sealing assembly, the LDH wiper seal offers a vital dust-proof sealing solution for hydraulic machinery.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
