This standard specifies the terms and definitions, general requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of sealants for thermal insulation projects. This standard applies to sealants that play a bonding and sealing role between thermal insulation materials. Table 1 Performance Index Project Unit Performance Index Density kg/m3 1300±100 Solid content % ≥80 Tensile bonding strength MPa ≥0.03 Shear strength MPa ≥0.08 Elongation % ≥80 Heat resistance/placed in 65℃ environment 168h, no abnormality in appearance. Low temperature resistance: No cracking or falling off after being placed in an environment of –196°C for 2 hours. Volume change rate% ≤22