Long pump life because of excellent mechanical seals.
采用优秀的机械密封，延长使用寿命。
Common seal installations fill two mechanical seals and seal.
常用轴封装置有填料密封和机械密封两种。
Mechanical seals are standard "Type 21" design for low replacement cost.
标准“21型”机械式密封，有利于降低更换成本。
Pumps work, should pay attention to check the pressure, temperature and mechanical seals work.
泵工作时，应注意检查压力、温度和机械轴封的工作。
Pumps work, should pay attention to check the pressure, temperature and mechanical seals work.
泵工作时，应注意检查压力、温度和机械轴封的工作。
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