Multilayer arc-shaped metal sealing ring assembly capable of being stacked for use

The utility model discloses a multilayer arc-shaped metal sealing ring assembly capable of being stacked for use, which comprises a plurality of layers of sealing rings, the inner diameters of the plurality of layers of sealing rings are consistent, the outer diameters of the plurality of layers of sealing rings are gradually reduced towards the flowing direction of fluid, and the end face of each sealing ring is provided with a radially through positioning hole. The positioning holes of the multiple layers of sealing rings correspond to each other, the positioning pins are inserted among the multiple layers of sealing rings, the positioning pins are matched with the positioning holes, the number of the gaskets is two, the gaskets are located at the front end and the rear end of the multiple layers of sealing rings respectively, and when the sealing rings are assembled with a dish plate, the gaskets make contact with the dish plate and the pressing plate. The multiple layers of sealing rings in the device are