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。
2
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。
3
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.