| 摘要 |
PROBLEM TO BE SOLVED: To provide a reservior which can reliably prevent operating liquid from leaking out without impairing workability in assembling a cap even when the cylindrical end of the reservior is deformed. SOLUTION: This has, on an outer peripheral part of an annular seal member 25, an annular plate 28 whose bottom end face is opposite to the end face 5a of a cylinder 5 via a gap and top end face abuts on the inner face of a cap 26, an annular projection 29 which is shaped like a trapezoid in section and is formed on the bottom end face of the outer peripheral part and abuts on the end face 5a of the cylinder 5, and an annular recess 31 formed on the top end face of the outer peripheral part opposite to the annular projection 29. Therefore, even if the end face 5a of the cylinder 5 is deformed, the annular projection 29 is deformed in response to the deformed and face to prevent faulty sealing, thereby reliably preventing a liquid leak without impairing workability in assembling a cap. |
