

The hydraulic cylinder oil seal is typically made of rubber or other synthetic materials that are resistant to hydraulic fluid and capable of withstanding high pressure and temperatures
. The seal is carefully designed to provide a tight fit between the moving parts of the cylinder, such as the piston and the cylinder walls, to prevent any fluid from leaking out. Without a proper oil seal, hydraulic fluid could leak out of the cylinder, leading to a loss of pressure and potentially damaging the entire hydraulic system.2. Remove the Boom Cylinder Start by detaching the boom cylinder from the excavator. This typically involves removing the pins and bolts that secure the cylinder to the boom and the attachment points. Use a hydraulic jack to support the cylinder as you loosen the connections.