Shafts, rotating, sealing ring seals

A rotating seal ring (primary ring), mounted so that it can slide along the shaft to take up wear in the seal faces. 

Main Seal Body The term seal body makes reference to all rotating pai ts on a pusher seal, excluding shaft packing and seal ring. In many cases it is the chief reason to avoid a particular design for a particular seiwice. 

Designs differ eonsiderably from one manufaeturer to another. The term seal body makes referenee to all rotating parts on a pusher seal, exeluding shaft paeking and the seal ring. The eonfiguration or options offered on the seal body may be the ehief reason to avoid the design for that partieular serviee. 

Mechanical seals offer a more reliable seal than compressed packing seals. Because the spring in a mechanical seal exerts a constant pressure on the seal ring, it automatically adjusts for wear at the faces. Thus, the need for manual adjustment is eliminated. Additionally, because the bearing surface is between the rotating and stationary components of the seal, the shaft or shaft sleeve does not become worn. Although the seal will eventually wear out and need replacing, the shaft will not experience wear. 

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