油缸按欧洲标准设计，采用意大利进口密封件，设置多重密封圈，安全耐用；
Hydraulic cylinder make according to European standard, with built in and multi gaskets fromltaly, safety and reliable.
本实用新型用新型的密封件替代了原有的O型密封圈，从而保证了脉冲阀和气包之间的密封性能。
The novel sealing element for the novel submerged pulse valve replaces original O-shaped packing washers, thereby guaranteeing the sealing performance between the pulse valve and air bags.
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