密封装置安装在各种机器上,以防止作为机器的工作介质的流体(空气、水、油等)泄漏.借助其机能以维持已有的系统的压力,使机器不降低效率地持续工作,或者为了防止有害的毒气及易燃液体从系统内流出,以及异物(砂、尘埃、雨水等)由外部侵入机器内,以保证机器能够正常运转.密封件的形状及材质虽因机器的种类及运转条件(例如介质的温 The seals are mounted on a variety of machines to prevent fluid (air, water, oil, etc.) from leaking as the working medium for the machine, by virtue of their ability to maintain the pressure of the existing system, to keep the machine working without any loss of efficiency, or In order to prevent harmful gas and flammable liquid outflow from the system, and foreign bodies (sand, dust, rain, etc.) from the outside into the machine to ensure the normal operation of the machine. The shape and material of the seal due to the type and operation of the machine Conditions (such as the temperature of the medium