IAPMO IGC 120-2019涵盖了用于冷热饮用水装置的弹性垫圈和橡胶环接头配件，并规定了材料、物理特性、性能测试和标记的要求。

IAPMO IGC 120-2019 covers elastomeric gasketed and rubber-ring joint fittings intended for use in hot and cold potable water installations and specifies requirements for materials, physical characteristics, performance testing, and markings.