MECHANICAL SEAL
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United States of America Patent
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app pub date -
Aug 26, 2015
filing date -
Sep 24, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In an embodiment, a rotating-side seal ring 5 is formed in a substantially pentagonal shape in cross section having a cut portion 5a at which a corner portion on the inside-diameter side and the side opposite to a sealing face is cut in a tapered shape. A cup gasket 7 is fitted over the inside-diameter side and the back-surface side, and is formed in a substantially L shape in cross section including an axial portion 7a in contact with the inside-diameter side and an inner cylindrical portion of the sleeve 2 and a radial portion 7b in contact with the back-surface side and a radial portion of the sleeve 2, and has a corner portion 7c facing the cut portion 5a formed in a shape along it. The thickness of the corner portion 7c is set larger than a gap between the inside-diameter side and the inner cylindrical portion.
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