![]() The selection of secondary seal type often determines the temperature and chemical capabilities of the seal. ![]() Standard mechanical seals can suit most requirements to temperatures of 500 degrees F and shaft speeds to 3600 RPM. The basic rotating face mechanical seal design is adaptable to serve a wide range of sealing applications including compressors. In others seals must be designed for evolving industrial demands. In many cases the designs have been proven to be workhorses over years of use. Mechanical seals are engineered for most pumps, mixer and agitator applications in maintenance. The choice of what is the best depends on the temperature, and nature of what is being sealed (viscosity, abrasiveness, weight (is it a slurry?)). The load the seal faces receive are engineered into the design of the seal. ![]() Springs (single or multiple), a metal bellows or just compressed elastomers are used to provide the needed energy to keep pressing the seal faces together. ![]() The other key aspect of a mechanical pump seal is how to maintain the seal. Every other leak path within the mechanical seal is blocked with the use off a gasket, o-ring, wedge (Rubber, PTFE or Flexible Graphite).
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