1.1 本规范描述了由致密弹性硅橡胶制成的产品，这些硅橡胶制成垫圈和附件（如定位块、垫片和垫片），用于建筑施工中的密封和玻璃安装。这些产品用于密封或用作建筑施工中机械约束表面之间的压缩密封系统的组件，也可用作结构硅酮密封胶玻璃系统的组件。 1.2 以下预防说明仅适用于试验方法部分第节 10 ，符合本规范。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.3 试验方法 C1166 如本规范所述，应用于测量和描述受控实验室条件下材料、产品或组件对热和火焰的响应特性，而不应用于描述或评估实际火灾条件下材料、产品或组件的火灾危险或火灾风险。然而，该测试结果可作为火灾风险评估的要素，该评估考虑了与特定最终用途火灾危险评估相关的所有因素。 1.4 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.5 对本标准具有管辖权的委员会不知道其他组织发布的任何可比标准。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 8.1 本规范描述了第节所列产品的类型（基于抗撕裂和压缩永久变形）、等级（基于硬度计硬度）、等级（基于火焰传播要求）和表面（基于表面特征） 4. 适用于各种应用。因此，必须规定适用的类型、等级、等级和表面，以及规定的其他选项，以便为预期用途提供适当的产品。

1.1 This specification describes products composed of dense elastomeric silicone rubber that are fabricated into gaskets and accessories (such as setting blocks, spacers, and shims) for use in sealing and glazing applications in building construction. These products are used to seal or serve as components of compression sealing systems between mechanically restrained surfaces in building construction and also as components in structural silicone sealant glazing systems. 1.2 The following precautionary statement pertains only to the test method portion, Section 10 , of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3 Test Method C1166 , as referenced in this specification, should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment that takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.5 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 8.1 This specification describes types (based on resistance to tearing and compression set), grades (based on durometer hardness), class (based on flame propagation requirements), and surfaces (based on surface characteristics) of products as listed in Section 4 for various applications. It is essential, therefore, that the applicable type, grade, class, and surface be specified, as well as other options stated, so that the proper product is provided for the intended use.