Engine General (Supplementary) USCG Question #18 (Set 1)

Of the hydraulic tubing fittings illustrated, the flared fitting for high pressure use is represented by figure __________. GS-010 Illustration GS-010: the U.S. Coast Guard has not released this illustration.

Official USCG Answer & Rule Citation

Correct Answer: Option A — A or B

Flared fittings are engineered for high-pressure hydraulic applications to ensure a metal-to-metal seal. The flare provides a mechanical grip and a larger sealing surface area compared to compression fittings, effectively preventing leaks under the high-stress conditions typical of marine hydraulic steering and watertight door control systems.

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