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Engine_2014 : General Subjects - 2139/3524
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Dry seal threads, typically used for tubing to pipe connectors, and threaded piping in hydraulic systems are __________.
A) the same as National Pipe threads
B) different than NPT as the crest of a matching thread is inĀ  contact with the trough of the opposing thread
C) different than NPT as the flanks of the matching threads are in contact with the opposing threads
D) the same as National Fine threads
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