SEAL RING
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United States of America Patent
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app pub date -
Mar 11, 2016
filing date -
Mar 16, 2015
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Abstract
A seal ring (100) is attached to an annular groove (210) provided on an outer periphery of a shaft (200), and slides on a lateral wall surface (211) of the annular groove (210) on a lower pressure side. The seal ring (100) includes: a dynamic pressure generation groove (120) that generates dynamic pressure with sealed fluid introduced thereinto, the dynamic pressure generation groove (120) being provided in a sliding region X of a lateral surface (111) thereof on the lower pressure side in which the lateral surface (111) slides on the lateral wall surface (211); and an introduction hole (130) that has an opening (131) at a position away from the lateral surface (111) of an inner peripheral surface (112) of the seal ring (100) by a distance Y, communicates with the dynamic pressure generation groove (120), and introduces the sealed fluid into the dynamic pressure generation groove (120).
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