Shown in the illustration is a mechanical...

Question 1 of 270705eccefa1bacbc34ba4d4716c

Shown in the illustration is a mechanical shaft seal providing constant surface contact, regardless of hull deflections, draft, or sea conditions while underway. This is ensured by the __________. See illustration GS-0135.

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Question 1 of 27070

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🔍 Key Concepts

• Mechanical shaft seal components shown in GS-0135 (adapter plate, drive alignment bolts, bellows, inflatable seal) • How a seal maintains constant face-to-face contact when the hull or shaft moves or flexes • Difference between parts that provide flexibility/spring pressure vs. parts used only for mounting or emergency sealing

💭 Think About

• From the labeled parts in the illustration, which one is shaped and located so it can flex or move with the shaft while still pushing the seal faces together? • Which option is normally used only when the shaft is stopped or for emergency/maintenance sealing, rather than for continuous operation at sea? • Which parts are rigid mounting or alignment hardware, and which part is designed to act like a spring that keeps pressure on the seal faces?

✅ Before You Answer

• Identify which component in the picture actually moves or flexes with shaft/hull deflection rather than staying rigidly bolted in place • Confirm which part’s job is to maintain sealing face pressure underway, not just to align or support the assembly • Make sure you are not choosing the item that is primarily an emergency or standby seal used when the shaft is not turning