The invention belongs to the technical field of emergency repair of a pipeline, which in particular relates to sealing rings of a Hafu joint. The sealing rings of the Hafu joint comprise sealing rings arranged at both sides, wherein a first sealing strip and a second sealing strip are arranged between the sealing rings, the end parts of the first sealing strip and the second sealing strip are connected with each other, and the position of the first sealing strip after the first sealing strip is symmetrical along the central axis of the sealing rings is opposite to the position of the second sealing strip. The position of the first sealing strip after the first sealing strip is symmetrical along the central axis of the sealing rings is opposite to the position of the second sealing strip, i.e. the central axes of the first sealing strip and the second sealing strip about the sealing rings are not symmetrical. By the arrangement mode of the sealing rings of the Hafu joint, the first sealing strip and the second sealing strip are incompletely abutted together or are not abutted together when the first sealing strip and the second sealing strip are oppositely installed, and the sealing effect of the sealing strips is realized by the structure matching of the sealing strips and the casings of the Hafu joint, thereby enhancing high-pressure resistance performance and water hammer resistance performance of the Hafu joint greatly and ensuring sealing property of the Hafu joint by the matching of the casings and the sealing strips.