What are the selection methods of mechanical seals?

What are the selection methods of mechanical seals? According to different working conditions and media properties, mechanical seals include high temperature and low temperature resistant mechanical seals, high pressure resistant and corrosion resistant mechanical seals, particle resistant mechanical seals and mechanical seals suitable for light hydrocarbon media that are easily vaporized by mechanical seals. Mechanical seals with different mechanical seal structure types and materials should be selected according to different uses. The main parameters of the selection are: the pressure of the sealed cavity (MPa), the fluid temperature (℃), the working speed (m/s), the characteristics of the fluid, and the effective space for installing the seal. The basic principles of selection are: 1. According to the pressure of the sealed cavity, determine the sealing structure to adopt mechanical shaft seal balanced or unbalanced, single end face or double end face, etc. 2. According to the working speed, determine the use of rotary or static, fluid dynamic pressure or non-contact type. 3. According to the temperature and fluid properties, determine the friction pair and auxiliary sealing materials, and correctly select the mechanical seal circulation protection system such as lubrication, flushing, heat preservation, and cooling. 4. According to the effective space for installing the seal, determine the use of multiple springs, single springs or wave springs, built-in or exterior-mounted. Keywords: mechanical seals, mechanical seals, mechanical shaft seals