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Patent Searching and Data


Title:
SEAL RING
Document Type and Number:
Japanese Patent JP2020085164
Kind Code:
A
Abstract:
To provide a seal ring capable of reducing a leak amount of a butterfly valve and maintaining a small leak amount for a long term.SOLUTION: A seal ring is configured to be mounted on an outer peripheral part of a valve body of a butterfly valve, and comprises: an annular body part having an outer peripheral surface, an inner peripheral surface and a pair of side surfaces; a flat part provided along the circumferential direction of the outer peripheral surface; and a chamfer part provided between at least one of the pair of side surfaces and the flat part, wherein a ratio (W2/W1) of a width W2 of the flat part to a width W1 of the body part is 0.29 to 0.95.SELECTED DRAWING: Figure 2

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Inventors:
SASAKI JUNICHI
Application Number:
JP2018222391A
Publication Date:
June 04, 2020
Filing Date:
November 28, 2018
Export Citation:
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Assignee:
RIKEN KK
International Classes:
F16J15/3272; F02M26/11; F02M26/70; F16J15/28
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Yohei Suzuki