Cup packing for Kobelco machinery

The cup packing, identified by part number C13901-02, serves as a dynamic seal within hydraulic and pneumatic cylinders. Its primary function is to maintain a seal between the piston and the cylinder wall or between the rod and the liner, effectively containing fluid pressure to facilitate linear movement. The component features a cup or U-shaped profile that expands under pressure, which assists in minimizing fluid leakage during the stroke of the piston or rod. This seal is utilized in various hydraulic actuators found in Kobelco machinery, including those managing the movement of booms, arms, buckets, and stabilizers.

This component is designed for use in Kobelco equipment. Cup packings are essential for the operation of hydraulic systems, as they prevent internal and external fluid bypass. By maintaining pressure, these seals ensure that the hydraulic actuators deliver the necessary force and precision for machine operation. When a seal is worn or damaged, it can lead to a loss of system pressure, reduced force, and erratic movement, which impacts the overall efficiency of the hydraulic system.