Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications, Part 4: Cast polyurethane sealing elements
弹性密封件.水和排水用管接头密封件的材料要求 第4部分:铸造聚氨酯密封件
Specifies requirements for materials used in factory-cast polyurethane sealing elements used in joints for drainage, sewerage and rainwater systems and non-potable water supply for continuous flow up to 45 degrees Celsius.