In use process of the nozzle, free end of the seal lip is shocked by environment pressure, so leans against exterior surface of the inner joint member for providing seal.
在吸嘴的使用过程中，密封唇的自由端受环境压力冲击，从而抵靠在内部接头件的外表面上，以便提供密封。
The seal lips (12-14) consist of inner seal lips (12, 13) and an outer seal lip (14).
以及多个密封唇（12-14），由一体设置于金属环的橡胶状弹性材料制成。
The operational principle is that the utility model makes use of the extrusion between the inner ring lip of the seal ring and the stamping door body to achieve seal function.
本实用新型的工作原理是利用门密封圈的内圈唇口与冲压门体之间的挤压来实现密封功能。
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