1.1 此测试方法 2. 涵盖了汽车齿轮油与特定腈、聚丙烯酸酯和氟弹性体油封材料兼容性的测定。 1.2 该测试方法的使用者应获得测试方法 D412 ， D471 和 D2240 并在进行本试验方法之前熟悉其用途。 1.3 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 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）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 汽车润滑油相关的密封失效有几个主要原因。该测试方法仅针对由弹性体过度硬化、伸长率损失和体积膨胀引起的故障，并试图确定油在现场使用中可能导致密封系统过早故障的可能性。此测试方法可用作性能规范的要求，如规范 D5760 以及J2360。 5.2 密封失效的另一个主要原因是在密封唇上形成碳、清漆和污泥状沉积物。汽车齿轮油的沉积物形成特性在试验方法中进行了评估 D5704 该程序的部分目的是评估油在现场服务中导致密封过早失效的可能性。

1.1 This test method 2 covers the determination of the compatibility of automotive gear oils with specific nitrile, polyacrylate, and fluoroelastomer oil seal materials. 1.2 Users of this test method should obtain Test Methods D412 , D471 , and D2240 and become familiar with their use before proceeding with this test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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 ====== 5.1 There are several major causes of automotive lubricant-related seal failures. This test method addresses only those failures caused by excessive elastomer hardening, elongation loss, and volume swell and attempts to determine the likelihood that an oil might cause premature sealing system failures in field use. This test method may be used as a requirement of a performance specification, such as Specification D5760 and J2360. 5.2 Another major cause of seal failure is the formation of carbon, varnish, and sludge-like deposits on the seal lip. The deposit-forming characteristics of automotive gear oils are evaluated in Test Method D5704 . That procedure is intended in part to evaluate the potential for oils to cause premature seal failure in field service.