A carbon steel liner is utilized to provide a leak proof vapor barrier for containment of concrete construction.

为防止混凝土结构的安全壳泄露，其内部有碳钢的衬垫。

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Closure flanges may be mechanically seamed or welded in place. Gaskets or other sealing elements shall be used with closures, unless the closure is inherently leak proof.

封闭装置凸缘可用机械方法或焊接方法洽当接合。除非封闭装置本身是防漏的，否则必须使用垫圈或其他密封件。

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The batteries are designed to be leak-proof and hermetically sealed.

这些电池的设计防渗漏，且密封性强。

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And he knows no landfill liner system is completely leak-proof, meaning there is some possibility that the industrial quantities of waste coming from the oil cleanup could pollute local underground water supplies.

VOA: standard.2010.08.05

Leak-proof and easily stackable, case-ready packages are produced in USDA-inspected plants and have a longer shelf life.

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