This part of GB 18173 specifies the classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage of rubber gaskets for shield tunnel segments. This part is applicable to rubber gaskets used for waterproofing of assembled segments of shield-tunnel tunnels with rubber as the main material. It is mainly used for waterproofing the joints of shield tunnels in subways, highways, railways, water supply and drainage, and electric power engineering.