USCG USCG General Eng
Set 11 • Question #77 of 498
Launch Interactive Practice Room Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by __________.
A
a compressed packing gland
B
lantern rings between the packing rings
C
a liquid seal
✓ Correct Answer
D
the stuffing box gland
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by', the standard operating requirement is: 'a liquid seal'.
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