1.1 本试验方法包括评估与耐腐蚀工艺设备一起使用的密封垫片的密封性能。 2. 包封垫片被描述为在通常暴露于腐蚀性环境的内部区域上具有一些耐腐蚀覆盖层的垫片。屏蔽材料可以是塑料（如聚四氟乙烯）或金属（如钽）。通常在信封内使用弹性适形填料。非金属垫片的设计和构造见《实践》 F336 . 1.2 以国际单位制表示的值应被视为标准值。括号中给出的值仅供参考。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。 本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 有关具体的预防措施，请参阅第节 6. . 1.4 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====== 4.1 该测试方法旨在在受控条件下评估所有类型的密封垫片的泄漏情况，并提供可测量的泄漏率。 4.2 确定密封给定垫片所需的扭矩也是该测试方法的一部分。通过将密封扭矩转换为总螺栓载荷，可以获得其他标准和非标准开口的有用设计信息。 4.3 该测试方法可用作进料质量控制测试，以评估来自不同供应商的类似垫片。当生产商和用户之间就参数达成一致时，该测试方法也可用作质量控制测试。 4.4 通过垫片或垫片上的泄漏，或两者兼而有之，通过此测试方法确定。

1.1 This test method covers the evaluation of the sealing properties of enveloped gaskets for use with corrosion-resistant process equipment. 2 Enveloped gaskets are described as gaskets having some corrosion-resistant covering over the internal area normally exposed to the corrosive environment. The shield material may be plastic (such as polytetrafluoroethylene) or metal (such as tantalum). A resilient conformable filler is usually used inside the envelope. The design and construction of nonmetallic gaskets is covered in Practice F336 . 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 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. For specific precautionary statements, see Section 6 . 1.4 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 ====== 4.1 This test method is designed to evaluate all types of enveloped gaskets under controlled conditions with respect to leakage and to provide measurable leakage rates. 4.2 Determining torque required to seal a given gasket is also part of this test method. By converting the torque at sealing to total bolt load, useful design information may be obtained for other standard and nonstandard openings. 4.3 This test method may be used as an incoming quality control test to evaluate similar gaskets from different suppliers. This test method may also be used as a quality control test when parameters are agreed upon between the producer and the user. 4.4 Leakage through the gasket or over the gasket, or both, is determined by this test method.