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The BH-7518-26 U-cup seal is a high-performance dynamic seal designed to prevent fluid leakage along reciprocating rods or plungers in Rotary lift pumps. This seal features a unique U-shaped profile that uses hydraulic pressure to flare the seal lips against the housing, creating an increasingly tighter seal as pressure rises. This design is particularly effective at preventing both high-pressure leaks during lifting and low-pressure \"weeping\" when the lift is idle. Made from premium polyurethane or nitrile rubber, it offers excellent resistance to abrasion and chemical breakdown from hydraulic oil. Replacing a worn U-cup is the most common fix for pumps that are leaking oil externally or failing to hold pressure.
You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.