In the illustration shown, an efficient seal is maintained between the suction cover and the volute by __________. GS-0012

Correct Answer: Option C — an asbestos gasket

Centrifugal pump casing integrity between the suction cover and volute is maintained by a compressed asbestos gasket. This ensures a pressure-tight seal, preventing fluid bypass or air infiltration into the suction eye, which is critical for maintaining pump efficiency and meeting the design requirements for marine auxiliary pumping systems.