: a ring (as of synthetic rubber) used as a gasket

Examples of O-ring in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
One of the biggest upgrades to the 2.0 model is a removable silicone O-ring which sits in a groove around the perimeter of the inner ring. Ben Coxworth july 09, New Atlas, 9 July 2025 And the O-ring detail on the straps gives it a little flair for style. Olivia Young, Travel + Leisure, 30 June 2025 Joints between the cylindrical sections of the rockets had a design flaw that, in the event of an O-ring failure, could result in the loss of the shuttle and its crew. Trip Gabriel, New York Times, 21 Feb. 2025 In 1986, while serving on the commission to investigate the Challenger disaster, Feynman conceived of a famous demonstration—involving a piece of rubber and a glass of ice water—to show that the O-ring seals in the space shuttle’s rockets became unreliable at low temperatures. Alec Nevala-Lee june 11, Literary Hub, 11 June 2025 See All Example Sentences for O-ring

Word History

First Known Use

1946, in the meaning defined above

Time Traveler
The first known use of O-ring was in 1946

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Cite this Entry

“O-ring.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/O-ring. Accessed 19 Jul. 2025.

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