1.1 这些测试方法提供了一种在室温下评估片状和固态就地垫片材料密封性能的方法。试验方法A仅限于液体泄漏测量，而试验方法B可用于液体和气体泄漏测量。 1.2 这些测试方法适用于评估垫片材料在不同压缩法兰载荷下的密封特性。当生产商和用户就以下参数的具体测试条件达成一致时，该测试方法可作为验收测试: 试验介质、介质内部压力和垫片试样上的法兰载荷。 1.3 这些测试方法使用小直径窄宽度垫片作为相对较低垫片载荷和相对较低压力下的试样。试验方法 F2378 是另一种密封性测试方法，使用更大的垫片试样和更高的内部压力和法兰载荷。 1.4 以国际单位制表示的值应被视为标准。括号中的值仅供参考。 1.5 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。 （有关具体的危险或警告声明，或两者兼而有之，请参阅 5.2.11 ，章节 6. , 6.3 , 8.2.4 , 11.3.2 ，以及 11.4.2 .) 1.6 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 这些测试方法旨在比较受控条件下的垫片材料，并提供精确的泄漏率测量值。 4.2 这些测试方法适用于测量高达6 L/h和低至0.3 mL/h的泄漏率。在许多情况下，可能无法实现“零”泄漏。 4.3 这些测试方法评估在负载下通常为5至30分钟的时间段后的泄漏率。长时间在负载下保持垫片材料可能会产生不同的结果。 4.4 如果测试中使用的流体导致垫片材料发生变化，如膨胀，则可能会得到不可预测的结果。

1.1 These test methods provide a means of evaluating the sealing properties of sheet and solid form-in-place gasket materials at room temperature. Test Method A is restricted to liquid leakage measurements, whereas Test Method B may be used for both liquid and gas leakage measurements. 1.2 These test methods are suitable for evaluating the sealing characteristics of a gasket material under different compressive flange loads. The test method may be used as an acceptance test when the producer and user have agreed to specific test conditions for the following parameters: test medium, internal pressure on medium, and flange load on gasket specimens. 1.3 These test methods use a small-diameter narrow-width gasket as the test specimen under relatively low gasket loads and relatively low pressures. Test Method F2378 is another sealability test method that uses a larger gasket specimen and higher internal pressures and flange loads. 1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.5 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 hazard or warning statements, or both, see 5.2.11 , Section 6 , 6.3 , 8.2.4 , 11.3.2 , and 11.4.2 .) 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 ====== 4.1 These test methods are designed to compare gasket materials under controlled conditions and to provide a precise measure of leakage rate. 4.2 These test methods are suitable for measuring leakage rates as high as 6 L/h and as low as 0.3 mL/h. In many cases, “zero” leakage may not be attainable. 4.3 These test methods evaluate leakage rates after time periods that are typically 5 to 30 min under load. Holding a gasket material under load for extended time periods may give different results. 4.4 If the fluid being used in the test causes changes, such as swelling, in the gasket material, then unpredictable results may be obtained.