Double-stack anti-locket gaskets

The double-stacked anti-loose gasket is composed of two gaskets, using the pressure locking method, the small tooth surface of the gasket is processed into radial straight teeth or circular arc teeth, and the large tooth surface is processed into the beveled surface of the large tooth. When the bolt is preloaded, one side of the small tooth surface of the gasket is wedged into the contact surface of the bolt head, and the other side of the small tooth surface is wedged into the surface of the connector, and the large tooth surface between the two gaskets is wedged to achieve the self-locking function.