The washer of the pump used with grease/oil. Why?
The washer of the pump used with grease/oil. Why?
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The washer of the pump use the oil because it become slippery so it is easy to come out
friction causes the washer to move up and down more easily when we use the water pump (hand pump) as it creates lower level of interaction between the wall of the pump and washer because of which friction decreases and efficiency increases