Reliability (Mechanical Seals Failure Modes 1): Contamination failures: The pumped medium is often a mixture of miscible liquids and a solution of solids, in addition to small suspended insoluble particles. The lubricating film in the sealing gap is subjected to large gradients in temperature, pressure and velocity. This increases the risk of precipitation and sedimentation in or near the sealing gap.

Question

Contamination failures: The pumped medium is often a mixture of miscible liquids and a solution of solids, in addition to small suspended insoluble particles. The lubricating film in the sealing gap is subjected to large gradients in temperature, pressure and velocity. This increases the risk of precipitation and sedimentation in or near the sealing gap.

Martin Mc Neill · Accepted Answer

Hang-up of a mechanical shaft seal means that the axial movement of the rotating part of the shaft seal is blocked. Hang-up mainly occurs in connection with O-ring-type seals, but is also seen in connection with bellows seals, although the underlying mechanism is different.

Reliability (Mechanical Seals Failure Modes 1)

Hang-up of a mechanical shaft seal means that the axial movement of the rotating part of the shaft seal is blocked. Hang-up mainly occurs in connection with O-ring-type seals, but is also seen in connection with bellows seals, although the underlying mechanism is different.

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