In application, which of the listed sealing devices is most similar to an O-ring?
Official USCG Answer & Rule Citation
Correct Answer: Option C — Quad ring
In USCG Marine Engineering General Subjects, for engine room systems involving 'In application, which of the listed sealing devices is most similar to an O-ring', the standard operating requirement is: 'Quad ring'.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.