This specification applies to pressure-sensitive tapes for sealing and sealing slip-type containers, such as fiber tubes and metal cans. Adhesive tapes consist of polyester film backing and are designed to meet the requirements of strength, water resistance, water vapor resistance and rain resistance in container sealing. The standard specifies the physical performance requirements of the tape, including adhesion, shear adhesion, thickness, relaxation, water transmissibility and water vapor transmission rate, etc. Adhesive tapes are also subject to accelerated aging tests to ensure their Reliability and durability in actual use. This specification provides comprehensive performance standards and test methods for sealing tapes.