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Trying to do something about Stainless Steel Tests
Mechanical seal
The principle of the mechanical seal is:
To seal a device used on rotating machinery. When the pump operates, the liquid could leak out of the pump between the shaft and the stationary parts (pump housing).
A single mechanical seal consists of two flat surfaces: one stationary face (Static) and one rotating face (Dynamic). The surfaces are pressed together by a spring to keep the seal from leaking.
Mechanical seals’ materials are commonly hard-to-soft combinations where the soft face is carbon-graphite. The hard surface is usually stainless steel, silicon-carbide (SiC), Tungsten carbide or ceramic. However, for abrasive media hard-to-hard faces are used, generally SiC to SiC.