SEAL - UCUP (Hyster HY0290726)

A worn u-cup seal can allow fluid leakage past the sealing lip, reducing system pressure and causing erratic component movement. The Hyster catalog reference HY0290726 identifies this aftermarket replacement seal. This seal type uses a flexible lip to create a dynamic barrier between moving and stationary surfaces. A common failure consequence is gradual loss of fluid, which may lead to insufficient lubrication and accelerated wear of adjacent parts. In a typical usage context, this seal operates under moderate pressure and relies on proper lip orientation for effective sealing. Verify the serial number or application, then call (562) 693-7748. The seal is a u-cup design, functioning as a rod or piston seal in fluid power applications.

Part number variants: HY0290726, hy0290726