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D2000类中。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。 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。

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. 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.