1.1该分类系统提供了一种指定或描述商用非金属垫片材料相关特性的方法。包括由石棉、软木、纤维素和其他有机或无机材料以及各种粘合剂或浸渍剂组成的材料。通常归类为橡胶化合物的材料不包括在内，因为它们包含在分类中 D2000 . 垫片涂层不包括在内，因为其细节将在工程图纸或单独规范中给出。 层压复合垫片材料（LCGM）的饰面材料包含在分类系统F104中。分类中包括组装的LCGM F868 . 1.2由于不包括所有有助于垫圈性能的特性，因此使用分类系统作为选择材料的基础是有限的。 1.3以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 该分类系统旨在鼓励报告属性的一致性；为供应商和消费者之间的沟通提供通用语言；指导工程师和设计师使用商用材料常用的测试方法； 并且在引入新材料和测试方法时具有足够的通用性。 该系统基于以下原则:非金属垫片材料可以根据特定的物理和机械性能进行描述。这使得用户或生产商能够基于对应用重要的特性来表征非金属垫片。

1.1 This classification system provides a means for specifying or describing pertinent properties of commercial nonmetallic gasket materials. Materials composed of asbestos, cork, cellulose, and other organic or inorganic materials in combination with various binders or impregnants are included. Materials normally classified as rubber compounds are not included, since they are covered in Classification D2000 . Gasket coatings are not covered, since details thereof are intended to be given on engineering drawings or in separate specifications. Facing materials for laminate composite gasket materials (LCGM) are included in Classification System F104. Assembled LCGMs are covered in Classification F868 . 1.2 Since all of the properties that contribute to gasket performance are not included, use of the classification system as a basis for selecting materials is limited. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This classification system is intended to encourage uniformity in reporting properties; to provide a common language for communications between suppliers and consumers; to guide engineers and designers in the test methods commonly used for commercially available materials; and to be versatile enough to cover new materials and test methods as they are introduced. This system is based on the principle that nonmetallic gasket materials can be described in terms of specific physical and mechanical properties. This enables the user, or producer, to characterize a nonmetallic gasket based on properties that are important for the application.