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butyl rubber
noun
: any of a class of synthetic rubbers that are made by copolymerizing isobutylene with a small amount usually of isoprene at low temperature
Examples of butyl rubber in a Sentence
Recent Examples on the Web
Other specialty caulks on the market include butyl rubber, which is good for sealing metal siding or roofing, and polyurethane sprays that are great on tiny cracks around doors and windows.
—Nor'adila Hepburn, Better Homes & Gardens, 28 Mar. 2024
They're made with a heavy-duty butyl rubber tube and have a hard plastic base rated to -40 degrees Fahrenheit.
—Rachel Klein, Popular Mechanics, 29 Dec. 2022
For several years, Wilson Sporting Goods lined its high-end Double Core tennis balls with a composite made from butyl rubber and vermiculite and developed by nanotech company InMat.
—Discover Magazine, 29 June 2010
Kerley on a running track made of butyl rubber and polyurethane, different story.
—Mark Zeigler, San Diego Union-Tribune, 16 July 2022
Giro moved to a butyl rubber, the same used in innertubes, for its elasticity and ability to produce stickiness.
—Tim Newcomb, Forbes, 16 Sep. 2021
This also features a butyl rubber bladder to keep its shape.
—Chris Hachey, BGR, 21 May 2021
Mountain bike tubes are made of either butyl rubber or latex.
—Bob Beacham, chicagotribune.com, 1 Apr. 2021
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Word History
First Known Use
1940, in the meaning defined above
Dictionary Entries Near butyl rubber
Cite this Entry
“Butyl rubber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/butyl%20rubber. Accessed 22 Nov. 2024.
More from Merriam-Webster on butyl rubber
Britannica.com: Encyclopedia article about butyl rubber
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