橡胶密封件.温度为110℃及以下的热水供给管道用密封圈.材料规范

[中文适用范围]： 本文件规定了用于热饮用水和非饮用水供应（最高 110 °C）的硫化橡胶密封件的材料要求。 指定的不同密封名称是根据密封类型、密封应用和特定密封的要求来定义的（参见表 2）。 还给出了成品接头密封件的一般要求。 考虑到管接头的性能是密封材料特性、密封几何形状和管接头设计的函数，特定应用所需的任何附加要求均在相关产品标准中规定。 本文件旨在在适当的情况下与规定接头性能要求的产品标准结合使用。 本文件适用于与所有管道材料一起使用的接头密封件，包括金属、粘土、纤维水泥、混凝土、钢筋混凝土、塑料和玻璃增强塑料。 它适用于复合材料和非复合材料密封件的弹性体部件。 对于由硬度为 76 IRHD 至 95 IRHD 的材料制成的复合密封件，仅当材料参与密封功能或有助于密封件的长期稳定性时，才适用断裂伸长率、压缩永久变形和应力松弛的要求。 封印。 本文件中指定的材料要求旨在实现长期性能和 50 年的潜在使用寿命。 密封件的使用寿命不仅取决于材料性能，还取决于本文件中未定义的其他参数，例如安装设计、装配质量以及与操作条件的结合。 由泡沫橡胶材料制成的节环不包括在本文件中。 [外文原描述]： ISO 9631:2018 specifies material requirements for vulcanized rubber seals for hot drinking and non-drinking water supply (up to 110 °C). The different seal designations specified are defined according to seal type, seal application and the requirements for a particular seal (see Table 2). General requirements for finished joint seals are also given. Any additional requirements called for by the particular application are specified in the relevant product standards, taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design. This document is intended to be used where appropriate, in conjunction with product standards which specify performance requirements for joints. ISO 9631:2018 is applicable to joint seals for use with all pipeline materials, including metals, clay, fibre cement, concrete, reinforced concrete, plastics and glass-reinforced plastics. ISO 9631:2018 is applicable to elastomeric components of composite and non-composite seals. In the case of composite seals made from materials with hardness ranging from 76 IRHD to 95 IRHD, the requirements for elongation at break, compression set and stress relaxation apply only when the material participates in the sealing function or contributes to the long-term stability of the seal. The material requirements specified in this document are designed for long term performances and a potential lifetime of 50 years. The lifetime of a sealing depends not only on material performance but also on other parameters which are not defined in this document like the mounting design, the quality of assembly and the combination with operating conditions. Joint rings made from cellular rubber materials are not covered by this document.