Multi segment rings ( GAP SEAL )

 
 

With multi segment carbon/graphite sealing rings, tight tolerances for assembly are not necessary.

When installed, the rings must have a certain clearance at the segment joints, so that, under the pressure of the gar-ter spring, they work initially as contact seals.

It is only after slight wear dur-ing running-in that the joint clearance becomes zero and the seal can run practically as a gap seal, with minimum gap losses and consequently high sealing effect.

The adjustable orientation of multisegment rings in chamb-ers is advantageous for com-pensation of radial shaft dis-placement.

With butt jointed sealing rings it is preferable to arrange two rings in a cham-ber with the joints staggered in relation to one another in order to achieve a good axial seal.

Even with carbon sealing rings with overlapped or over-lapped mortise joints, this arrangement of the rings in pairs in chambers gives an improvement in axial sealing.

For rotation prevention the rings are usually pinned to one another or to the chamber ring.

segmented with lapped tenon joints

  segmented with lapped joints

 

segmented with butt joints

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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