Washer is a mechanical seal between two objects, between two objects is often used to prevent stress, corrosion, and naturally expand the pipeline leaks. Because machined surface can be perfect, use shims to fill irregularities. Gasket is usually made from sheet material, such as gasket paper, rubber, silicone, metal, Cork, felt, neoprene, nitrile rubber, fiberglass or plastic polymer (such as Teflon). Gaskets for specific applications may contain asbestos.
Washer is a thin (usually round) of a vulnerability (usually in the middle) is typically used to distribute load thread fasteners. Other uses are as intervals, springs (Belleville washer, wave washer), wear pads, display devices, locking devices. Rubber gaskets used in taps (valves) to cut off the flow of liquid or gas. Rubber or silicone gasket can also be used to reduce the vibration of the fan. Inner diameter of outer diameter of the gasket is usually about twice.
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