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2. Piston Seals Designed to fit within hydraulic cylinders, these seals help contain fluid pressure while allowing smooth movement of the piston. They are essential in preventing leakage when the piston is extended or retracted.

7. Reinstall the Boom Cylinder Once the cylinder is reassembled, lift it back into place using the hydraulic jack. Reattach it to the excavator by securing the pins and bolts. Make sure everything is tightened to the manufacturer's specifications.

Oil seals are designed to fit around the rotating shaft of a machine or equipment. They create a barrier between the moving parts of the machinery and the external environment, ensuring that oil and other fluids do not leak out. This is vital for maintaining the efficiency and durability of the machinery, as leakage can lead to a loss of lubrication and increased wear and tear on the moving parts.

Hub oil seals may not be the most glamorous components of a vehicle, but their role is undeniably vital. By preventing oil leaks and protecting against contaminants, these seals help maintain the overall performance, efficiency, and safety of vehicles. Regular checks and timely replacements of worn-out hub oil seals can extend the life of critical components and enhance the driving experience. As with any automotive component, understanding their function leads to more informed maintenance decisions, ensuring your vehicle remains roadworthy for years to come.