Mechanical seal selection method

Mechanical seals are precision, structure is more complex mechanical component of the foundation, a variety of pumps, reaction synthesis reactor, turbine compressor, submersible motors and other key components of the device. Its sealing performance and service life depends on many factors, such as selection, the accuracy of the machine, the correct use of the installation.
Mechanical seal selection method:
Mechanical seal according to the working conditions and the different nature of the media, with high temperature, low temperature mechanical seals, high pressure, corrosion-resistant mechanical security seals, mechanical seals and resistance to particulate media to adapt easily vaporized light hydrocarbon medium, mechanical seals, etc., should be based on different usefulness select a different structural types and materials of the mechanical seal.
Selection of the main parameters are: seal chamber pressure (MPa), fluid temperature (℃), working speed (m / s), the sealing properties of the fluid and the effective installation space.
Mechanical seal selection of the basic principles are:
1 according to the meter seal chamber pressure to determine the sealing structure using balanced or unbalanced, single face or double and so on.
(2) according to the working speed, determine the use of rotary or static, hydrodynamic or non-contact type.
3 according to the temperature and fluid properties, determine the friction and auxiliary sealing materials, as well as the right choice lubrication, washing, heat, cooling, mechanical seal cycle protection systems.
4 According to the sealed space efficient installation, determine the use of multi-or single spring or springs wave springs, built-in or externally mounted.