一、概述工程机械中最长用的 O 形密封圈,它的优点是:结构简单、体积小、重量轻、制造容易、装拆方便,成本低廉,并在各种工作状况和环境中,具有一定寿命和可靠的密封性,且装配质量容易保证,维修更换也很方便。因此多年来在各种工程机械,甚至在一些尖端产品(如飞机、卫星)上都广泛使用。密封结构的理论计算,它也和其他液压 First, an overview of the longest used in construction machinery O-ring, its advantages are: simple structure, small size, light weight, easy to manufacture, easy assembly and disassembly, low cost, and in a variety of working conditions and environment, with A certain life expectancy and reliable sealing, and easy to ensure the quality of the assembly, maintenance and replacement is also very convenient. So over the years in a variety of construction machinery, and even some of the most sophisticated products (such as aircraft, satellites) are widely used. The theoretical calculation of the seal structure, it also and other hydraulic