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The Concrete Pump Slewing Cylinder is a critical component in the concrete pumping system, consisting of five main parts: the cylinder head, piston and piston rod, sealing device, buffer device, and exhaust device. The sealing devices, also known as sealing rings, are installed between the cylinder barrel and the end cover, the piston inner plug and the piston rod, the piston and the cylinder, and the piston rod and the front end cover.