Nonmetal compensator capable of being disassembled quickly

The utility model relates to a non-metal compensator capable of being disassembled quickly. The sealing device comprises an upper connecting body, a lower connecting body and flexible sealing cloth, the upper connecting body is provided with an upper flange, an upper connecting plate and an upper sealing end face. The upper flange is connected with the upper sealing end face through an upper connecting plate. An upper retaining strip is arranged on the inner side of the upper sealing end surface; a lower flange, a lower connecting plate and a lower sealing end surface are arranged below the lower connecting body; the lower flange is connected with the lower sealing end face through a lower connecting plate, a lower retaining strip is arranged on the inner side of the lower sealing end face, and the flexible sealing cloth is fixed to the outer side of the upper sealing end face and the outer side of the lower sealing end face by locking the corresponding pressing strips through N corresponding locking assembli