This paper expounds the basic principles and characteristics of stratified shear packing seal system, and presents its application in the circulating water pump of LP ammonium carbamate condenser of urea plant.

• 文中对层状剪切式填料密封系统的基本原理与特点进行论述,并介绍其在尿素装置低压甲铵冷凝器循环水泵上的应用情况。