根据O型橡胶密封圈(以下简称O型圈)极为通用的密封特性,介绍了其整体结构和在机械设备、液压与气压传动系统等密封领域的应用。分析说明了O型圈的密封原理和其在装配、拆卸过程中的要求和注意事项,并结合实践经验,总结了几种实用的选择材料和润滑剂的技巧。形象地介绍了O型圈的拆卸工具和装配与拆卸的方法,比较容易地解决了O型圈的装配与拆卸难题,从而保证O型圈的装配要求和可靠性,并能够延长其使用寿命,为O型圈的装配与拆卸起到指导作用。 According to the extremely common sealing characteristics of O-ring, O-ring is introduced, its overall structure and its application in the field of mechanical equipment, hydraulic and pneumatic transmission system, etc. are introduced. The principle of O - ring sealing and its requirements and precautions during assembly and disassembly are analyzed and explained. Combining practical experience, several practical tips for selecting materials and lubricants are summarized. The O-ring disassembly tool and the method of assembling and disassembling are introduced vividly, and the problem of assembly and disassembly of the O-ring is solved relatively easily so as to ensure the assembly requirements and reliability of the O-ring and prolong the service life of the O-ring. O-ring assembly and disassembly play a guiding role.