Non-asbestos temperature-resistant sealing gasket

The asbestos-free temperature-resistant sealing gasket comprises an outer shell layer and an inner ring layer, the inner portion of the outer shell layer is hollow, the inner side wall of the outer shell layer is open, a heat insulation filling layer is arranged in the outer shell layer, and the heat insulation filling layer is fixedly connected with the outer shell layer and the inner ring layer through bonding layers. The outer side of the inner ring layer is inserted from the opening position of the inner side wall of the outer shell layer, an inner side ring of the inner ring layer is located on the inner side faces of the upper side wall and the lower side wall of the outer shell layer, and the distance between the two sides of the inner side ring of the inner ring layer and the upper side face and the lower side face of the outer shell layer is 0.3 mm. According to the utility model, through the outer shell layer and the inner ring layer which are made of silicon rubber, the high temperature resistance