: a ring (as of synthetic rubber) used as a gasket
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Step 4: Thread your hook between the O-ring and stick bait.—Derek Horner, Outdoor Life, 27 Feb. 2025 Image Image Investigators determined that the accident was caused by the failure of a rubber seal, known as an O-ring, on one of two booster rockets, which were attached to the shuttle like a jetpack to propel it skyward.—Trip Gabriel, New York Times, 21 Feb. 2025 Among them was the way NASA had calculated the O-rings’ shape.—Quanta Magazine, 20 Sep. 2024 In January 2018, Lochridge sent Rush a quality-control inspection report detailing 27 issues with the vehicle, from questionable O-ring seals on the domes and missing bolts to flammable materials and more concerns about its carbon-fiber hull.—Mark Harris, WIRED, 11 June 2024 See All Example Sentences for O-ring
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