Airtight
A hermetic seal has the quality of being airtight. In common usage, the term often implies being impervious to air or gas. When used technically, it is stated in conjunction with a specific test method and conditions of usage.
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Famous quotes containing the word airtight:
“The total collapse of the public opinion polls shows that this country is in good health. A country that developed an airtight system of finding out in advance what was in people’s minds would be uninhabitable.”
—E.B. (Elwyn Brooks)
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