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O-ring
O-ring (ō′rĭng′)n. A flat ring made of rubber or plastic, used as a gasket.O-ring n (General Engineering) a rubber ring used in machinery as a seal against oil, air, etc O-ring (ˈoʊˌrɪŋ)
n. a ring of pliable material, as rubber or neoprene, used as a gasket. [1945–50] O-ring
O-ringA resilient ring used as a gasket in sealing a joint.O-ring A flat or circular gasket made from synthetic rubber, used as an airtight seal or a seal against high pressures. The ring fits into a groove to form a seal between two parts. O-rings are two-way seals; they seal in either direction.See OR
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