Engineering mechanical seal selection method

mechanical security seals according to the working conditions and the different nature of the media, with high temperature, low temperature mechanical seals, high pressure, corrosion-resistant mechanical 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.
Selection of the basic principles are:
1 according to the seal chamber pressure to determine the sealing structure using balanced or unbalanced, single face or double, etc.;
(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 Security seals loop protection system;
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.