a shaped sheet or ring of rubber or other material sealing the junction between two surfaces in an engine or other device
垫圈;衬垫;密封垫(片、板)。
〈古〉 束帆带,束帆索。
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blow a gasket 1 suffer a leak in a gasket of an engine (发动机的)垫圈泄漏 -
2 informal lose one's temper 〈非 正式〉 发脾气
"early 17th cent. (in sense 2): perhaps from French