Certified Maintenance and Reliability Technician (CMRT) Practice Test

Question: 1 / 400

What might cause a properly installed seal to leak?

Loose fittings

A cracked face

When considering the factors that can cause a properly installed seal to leak, a cracked face is particularly relevant. A seal's effectiveness relies on its integrity and the surface against which it rests. If the face of a component is cracked, this can create gaps that compromise the seal's ability to contain fluids or gases. Cracks can disrupt the uniform contact needed for the seal to function properly, allowing leaks to occur.

Other factors, like loose fittings or high pressure, can also contribute to leaks under certain circumstances, but they do not directly affect the seal's physical integrity in the same manner that a cracked face does. Similarly, excessive heat can cause materials to expand and potentially weaken seals, but the immediate presence of a crack presents a more direct threat to proper sealing than the other factors.

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High pressure

Excessive heat

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