Containers must be placed and well-sealed in one transparent plastic bag with a press-seal, of a maximum capacity of one liter (quart).

这些东西必须被密封放置在一个有冲压密封圈的，最大容量为一公升（一夸脱）的透明塑料袋中。

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Start stem O-ring seal over stem, then press into position as handle is pressed down over stem.

从阀杆上的阀杆O形环密封开始，然后在手柄安装在阀杆上后，将其压进手柄的位置上。

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Seal gaskets are closed in the support points of plates resist high press fluid impact and prevent leak out of fluids. Twice gelatinize technology make gasket firm connected.

处于板片有力支撑点包围中的密封垫片，能承受较大的流体冲击，不会泄漏，两次涂胶工艺保证了密封垫片牢固粘接。

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Available from Seal Press, a member of the Perseus Books Group.

FORBES: Magazine Article

For instance, lorries crossing into Manhattan are now subject to stringent checks, and the local press is full of reports on "lockdown" plans which would seal off the island should intelligence suggest another terror attack is imminent.

BBC: Met chief learns NY terror lessons