公开(公告)号：US20190078687A1

公开(公告)日：2019-03-14

申请号：US16079441

申请日：2017-03-21

申请人： SHIMIZU ALLOY MFG. CO., LTD.

发明人： Ryosuke TAKEUCHI ,  Kazuhiro CHINO

IPC分类号： F16J15/12 ,  F16L23/024 ,  F16K27/00 ,  F16J15/10 ,  F16L23/18 ,  F16J15/08

摘要： A gasket and flange connection structure for a plumbing instrument including a substantially annular core (30) coated with a coating part (31) and formed with annular seal surfaces (32) on both surfaces. These annular seal surfaces (32) are provided so as to be capable of making sealed contact with any of flange surfaces (20, 21, and 22) of a flat seat shape flange, a full-flat seat shape flange, and a grooved-shape flange for allowing shared use. Configured on outer peripheral sides of the annular seal surfaces (32) are extended mounting parts (33) having a plurality of different diameters in accordance with the outer diameters of the various flange surfaces.