Permanent centrifugal pump shaft damage due to erosion, corrosion, and wear at the stuffing box is usually prevented by __________.

Correct Answer: Option C — renewable sleeves

In USCG Marine Engineering General Subjects, for engine room systems involving 'Permanent centrifugal pump shaft damage due to erosion, corrosion, and wear at the stuffing box is usually prevented by', the standard operating requirement is: 'renewable sleeves'.