Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications, Part 3: Cellular materials of vulcanized rubber
弹性密封件.水和排水用管接头密封件的材料要求 第3部分:硫化橡胶多孔材料
Specifies requirements for materials used in vulcanized rubber seals of cellular materials for non-pressurized drainage, sewerage and rainwater systems and non-pressure non-potable water supply (continuous flow up to 45 degrees Celsius).