In the case of dripper irrigation, lots of holes are cast according to the needs of the crops. Some of the holes that are not in function ought to be closed and sealed properly to ensure a balanced flow of water to the desirable drippers. A Dummy washer is used to seal the excess holes that are not in use. It is also easy to remove the washer. At the same time, the washer remains strong to the flow of the water without being broken.