This utility model relates to a
fuel tank locking nut with a sealing
gasket, belonging to the technical field of
fuel tank locking nuts. The
fuel tank locking nut with a sealing
gasket includes: a nut with a sealing
gasket at its bottom; and a sealing warning mechanism for alerting the user to leak oil from the sealing gasket. The sealing warning mechanism includes a mounting groove at the bottom of the nut, a warning component at the bottom of the mounting groove, and a sealing component between the warning component and the nut. The sealing warning mechanism can effectively detect and provide early warning of gasket leakage. Through the warning component, leaking
oil can be identified early and a warning
signal can be issued, preventing oil
spillage. The sealing component, by indicating changes in
compression pressure, helps installers confirm the sealing status, preventing seal failure due to over-pressure or under-pressure, and improving the stability of the sealing effect.