A plunger, force cup, plumber's friend or plumber's helper is a tool used to clear blockages in drains and pipes. It consists of a rubber suction cup attached to a stick (shaft) usually made of wood or plastic.

What happens when you use a plunger?

A plunger has a long handle with a large rubber cup at the end. When used correctly, a plunger can unclog pipes and have them run more efficiently. ... When the plunger is pressed down, over a clog, it forces air into the drain and increases pressure. When the clog is moved, the air will continue to move through the pipes.

How does a plunger work in a toilet?

A toilet plunger works by forcing pressure against the blockage in the toilet's U-trap. The force should push the clog out so the bowl can drain. Remember, you need water in the bowl to plunge effectively so if the bowl is empty, allow more water to flow into the bowl before plunging.