PARAMETERS

Fluid sealing in rotary shafts is a relatively complex mechanism that involves the interaction of numerous parameters.

The combination of all sealing parameters determines whether a sealing element can provide the expected sealing performance under the specific conditions, and for how long and to what extent it can maintain that performance. Sealing parameters can be categorized into four main groups based on their source: Shaft, bore, fluid and environment.

Under the "Shaft" category, various variables related to the shaft are examined, including shaft diameter, geometric accuracy, shaft material, surface quality, surface hardness, rotational speed, direction of rotation, and lubrication. This group represents the most critical parameters in practical applications.

The housing-related parameters are rather the factors that determine the performance of the static sealing. The geometric precision of the housing, the material it is made of,  the quality of the inner surface, the misalignment with respect to the shaft axis, or the presence of chamfers or radius at the housing  mouth are the main variables here.

The fluid head along with the shaft is the group in which includes other most critical parameters.
 Many variables such as viscosity, temperature, pressure, chemical content, foreign particle content of the fluid to be sealed are examined under this title.

Environment refers to the external environment of the application in which the seal is operating. Ozone in this environment, presence of gases or liquids that may cause oxidation, external temperature and pressure, or mechanical vibrations that may affect the sealing element are the main variables here.

You can get more detailed information by ing the parameter group which you are interested in on the figure.