Hydraulic cylinders and seals are used to lift beds and winches, operate presses, and to push, support, and press heavy loads. Hydraulic cylinders are linear actuators that provide back-and-forth movement when they are under pressure. They are often used in manufacturing, process handling, recycling, and agricultural machinery, and in mining and other industries where electrical or air tools can cause sparking. Hydraulic seals keep fluid from leaking out of the chamber and prevent dirt from contaminating the fluid to extend the service life of the cylinder and ensure cylinders are operating at capacity.