Rotary threading seal for electric energy meter

The utility model discloses a rotary threading seal for an electric energy meter, and aims to provide the rotary threading seal for the electric energy meter, which is convenient in sealing operation, high in sealing efficiency and good in antitheft safety performance. The rotary threading seal comprises a cylindrical seal main body and a seal cover, wherein the upper end of the seal main body is opened, and the lower end is closed; the seal cover is arranged in the opening at the upper end and used for an opening in the upper end of a seal covering main body; the seal cover is rotatably arranged in the opening at the upper end of the seal covering main body; a winding shaft is arranged on the inner end face of the seal cover; an anti-inversion self-locking mechanism is arranged between the seal main body and the winding shaft and comprises an inner ratchet wheel and a pawl; the inner ratchet wheel is arranged on the inner side of the seal main body and coaxial with the winding shaft; the pawl is arranged on the outer side of the winding shaft and adapted to the inner ratchet wheel; an outer upper threading hole and an outer lower threading hole are formed in the outer side of the seal covering main body; an inner upper threading hole and a lower inner threading hole are formed in the winding shaft.