The LBH type wiper seal is a widely used dust-proof sealing part for reciprocating piston rods of hydraulic cylinders. Installed inside the gland at the outer end of the cylinder, its primary function is to scrape dust, mud, sand and metal particles off the rod surface as the rod retracts, preventing external contaminants from entering the sealing system and damaging inner rod seals and cylinder components.
Manufactured from high-performance polyurethane, the LBH dust seal features a sharp scraping lip and stable base structure. It provides excellent abrasion resistance and low temperature flexibility. The lip maintains proper contact force on the rod surface to wipe away pollutants reliably, without excessive friction that causes rod wear. The compact profile fits standard wiper grooves perfectly, supporting simple installation and replacement. It also works well with most hydraulic fluids and resists aging under continuous outdoor working conditions.
LBH wiper seals are extensively applied in construction machinery, forklifts, agricultural equipment and other medium-duty hydraulic cylinders. By blocking foreign debris, LBH dust seals protect the main sealing set, reduce oil leakage and extend the whole cylinder service life. For OEM cylinder production and aftermarket spare parts supply, the LBH type dust seal remains a mature and economical choice to keep hydraulic systems clean and stable.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
