Title:
パッキンを用いたネジのシール装置
Document Type and Number:
Japanese Patent JP6928941
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a seal device comprising a combination of a packing and a cup-shaped washer, and excellent in water cut-off performance.SOLUTION: A seal device comprises a combination of a packing 2 formed into a substantially hemispherical contour, and a washer 3 formed into a cup shape, which can covering the packing 2 from above an upper surface. On a lower surface of the packing 2, provided are a plurality of annular projections 2d, 2e arranged coaxially with an axial center in a vertical direction. The annular projections 2d, 2e have a higher downward projection amount as positioned toward an outer peripheral side. The annular projection 2d positioned on an outermost side is positioned on an outer peripheral part lower surface of the packing 2, and the annular projection 2e positioned on an innermost side has an innermost diameter d set so as to become an inner diameter or more and an outer diameter or less of a washer fitting cylinder 2c provided at an upper part of the packing 2.SELECTED DRAWING: Figure 3
Inventors:
Ukai Wahiro
Application Number:
JP2016198724A
Publication Date:
September 01, 2021
Filing Date:
October 07, 2016
Export Citation:
Assignee:
Wakai Holdings Co., Ltd.
International Classes:
F16B43/00; E04D3/36; F16J15/10; F16J15/12
Domestic Patent References:
| JP52121160A | ||||
| JP60003304U |
Foreign References:
| US4712802 |