Sealing device
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Nov 11, 2014
filing date -
Jan 16, 2014
priority date (Note) -
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Abstract
A sealing device suppresses deterioration of sealing properties due to plastic deformation (settling) of an outer circumferential lip, including a packing (10) having an outer circumferential lip (12) provided on a sealed fluid side and an inner circumferential lip (13) on an inner circumferential side, and a metal spring member (20) mounted in a mounting groove (11) and having an outer circumferential pressing portion (21) that extends radially outward and toward the sealed fluid side from a groove bottom of the mounting groove (11) and presses the outer circumferential lip (12) radially outward, and an inner circumferential pressing portion (22) that extends radially inward and toward the sealed fluid side from the groove bottom of the mounting groove (11) and presses the inner circumferential lip (13) radially inward. Among the outer circumferential lip (12) and the inner circumferential lip (13), a protrusion (13a) for preventing the spring member (20) from coming off is provided only on the inner circumferential lip (13).
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