Gasket, differential mechanism, speed reducer, driving assembly and vehicle

The utility model provides a gasket, a differential mechanism, a speed reducer, a driving assembly and a vehicle. The gasket comprises a gasket body and an annular groove. The gasket body is provided with a first surface suitable for being attached to a rotating piece. The annular groove is formed in the first surface and surrounds the center position of the first surface. Through the arrangement of the annular groove, the functions of oil guiding and lubricating are achieved, lubricating oil can form a film between the gasket and the contact face, friction and abrasion are reduced, it is ensured that the whole contact face is fully lubricated, and the good lubricating state is continuously kept in the running process; the oil guide groove is formed in the gasket, the contact area of the gasket and the rotating part is reduced, friction resistance is low, energy loss is reduced, transmission efficiency is improved, and noise, vibration and rigidity performance are effectively improved. 本实用新型提供一种垫片、差速器、减速器、驱动总