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The auxiliary equipment for mechanical seals is a general term for many components. It consists of a filter, a hydrocyclone, a flow-limiting orifice plate, a cooler, a pressure tank, a pressure boosting tank, various monitoring instruments, pipelines, and fittings. In practical work, one or several can be used, selected according to specific conditions. Through methods such as flushing, cooling, filtering, and separation, it is possible to lubricate and cool or regulate the temperature of mechanical seals, as well as to flush, purify, dilute, and remove leaking fluids, thereby improving the operating conditions of the seals. The most important mode of operation among all auxiliary facilities is flushing. The so-called flushing involves injecting a sealing fluid into the sealing chamber to perform functions such as lubrication, cooling, and purification, thereby changing the unfavorable environment into one that is suitable for sealing. There are many types of flushing; based on the flushing method and the sealing fluid, it can be divided into self-flushing. Cyclic flushing and injection flushing. Self-flushing is achieved by using the pressure difference generated by the pump itself, or the pressure difference created by a pumping device within the sealed chamber, to allow the sealed medium to flow through the sealant in a closed loop for flushing purposes ； Circulating flushing achieves the purpose of cleaning by using a device that creates a pressure difference (such as a pumping ring) to circulate an external sealing fluid (sometimes referred to as a isolation fluid) ； Injection flushing is a method used to improve the sealing conditions when a sealed medium is not suitable as a sealing fluid, by injecting another liquid into the sealing chamber from the outside. Temperature control systems: Use fluids at appropriate temperatures to cool or insulate (or heat) the sealed chamber, the static ring, and other components, thereby improving sealing stability and extending their service life. These facilities do not come into contact (or mix) with the sealed fluid. It should be noted that the flushing system also has the function of temperature regulation, allowing for direct cooling of the seals. Filtering and separation: During flushing, filters and hydrocyclones are used to remove impurities from the sealing fluid, thereby ensuring that the sealing surfaces are not damaged. In addition to the above, auxiliary facilities include heat exchangers, orifice plates, pressure storage tanks, and instruments used to achieve the aforementioned functions; all of these together constitute the sealing system.