Our products have good seal airtight , low price and flexible rotation , and are thought of be economic and practical .

此类产品密封好、造价低、转动灵活，是一种经济实用型的产品。

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Application of seal airtight spot welding in bus industiy is introduced in this paper. This welding technology can get good weld formation better seal airtight weld and high production.

介绍了密封胶点焊新工艺在客车制造中的应用，分析了应用该新工艺具有焊接变形少、焊缝密封性好、生产效率高等特点。

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Seal cover over the heat exchanger airtight with butyl adhesive.

用丁基合成橡胶粘合胶将罩盖密封在热交换器上。

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Instead, health workers should switch to N95 respirators that form an airtight seal around the nose and mouth.

CNN: Report on handling H1N1 cases: Use masks with airtight seals

In his wine cellar in Napareuli, six miles down the road from the Alaverdi Cathedral, Gela Gamtikulashvili crosses himself and prises the cover of a qvevri from its airtight clay seal.

BBC: Discovering wine in Georgia

The Federal Reserve Bank of New York's gold vault, for example, is located in bunkers 80 feet below its headquarters on Maiden Lane in Lower Manhattan, and is protected by an airtight and watertight seal.

WSJ: Wall Street Braces for a