I need some info to help solve our seal and bearing problems. First, are there any good reference materials on carbon seal design? Specifically, I would like to know what the face to face (carbon to ceramic) pressure should be to see if we're in spec. Secondly, we have a number of motors with sealed bearings that appear to have dried-out grease. I have conflicting advice from the manufacturer's engineer and a competing manufacturer's engineer as to whether or not I can rejuvenate this dried-out grease with oil. It seems feasible to me, but the manufacturer says no. The other guy says, "No Problem." Who to believe?
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