Page 242 - Know and Understand Centrifugal Pumps

Failure Analysis of Mechanical Seals

will verify the perpendicularity of the seal chamber to the shaft. If the
chamber is not perpendicular to the shaft, the seal’s faces and springs
will have to flex twice with every revolution to maintain contact. This
will lead to fretting corrosion, a damaged pump shaft or sleeve, and
rapid failure of the seal.

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