Hydraulic press (a kind of hydraulic press) is a kind of hydraulic press with special hydraulic oil as working medium and hydraulic pump as power source. The hydraulic oil enters the cylinder/piston through the hydraulic pipeline under the action of the pump, and then there are several sets of seals in the cylinder/piston. The seals in different positions are different, but they all play a sealing role, so that the hydraulic oil will not leak.
Finally, the hydraulic oil circulates in the oil tank through the one-way valve, so that the oil cylinder/piston does work circularly, thus completing certain mechanical actions as a productivity machine.