The amount of pressure a plunger creates depends on various factors, including its design, size, and the force applied to it. Plungers typically generate pressure by compressing air or liquid trapped within a confined space. The specific pressure created can vary significantly. In household use, a plunger can create enough pressure to unclog a drain. However, in industrial applications, specialized plungers can generate much higher pressures to perform tasks such as hydraulic or pneumatic actuation.