| 摘要 |
PROBLEM TO BE SOLVED: To provide a gasket for a tightening part of a screw member, the gasket showing good sealing property.SOLUTION: A gasket for a tightening part of a screw member includes: a screw hole member including a screw hole and having a conical face on an opening end of the screw hole, the conical face having a diameter increasing outward; a screw member including a head part and a shaft part extending from a side of one end face of the head part, in which the shaft part has an outer circumferential face that is not threaded from the head part side and a screw part that is threaded from one end side of the outer circumferential face; and a gasket made of a rubber-like elastic material, which is disposed in an annular space to be enclosed by the conical face, the outer circumferential face and the one end face of the head part when the screw member is tightened in the screw hole. The gasket is configured to include an annular face showing a linear cross section that is formed by cutting an outer circumferential face side of a circular cross section. |
