1.1 本试验方法涵盖了评估薄板、复合材料和固体形式就地垫片材料密封性能的方法（见分类 F104 或 F868 )在室温下，可用于流体（气体或液体）泄漏率测量。它利用相对较短的保持时间，不打算预测应用中的长期性能。 1.2 本试验方法适用于通过测量泄漏率来评估垫片材料在不同压力载荷下的密封特性。 当生产商和用户同意以下参数的特定测试条件时，可将本测试方法用作验收测试:( 1. )试验介质( 2. )介质的内部压力( 3. )垫片试样上的压力负荷，以及( 4. )压板的表面光洁度。 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====== 5.1 本试验方法旨在通过提供高达32 MPa（4640 psi）的不同压力载荷下泄漏率的精确测量，比较受控条件下垫片材料的密封特性。 5.2 本试验方法适用于测量0。 对于气体，1毫升/分钟到高达5升/分钟。 5.3 该测试方法评估导致稳态泄漏率条件的时间段（通常为30分钟）后的泄漏率。需要在负载和内部流体压力下保持垫片材料，直到达到稳定状态，以获得可重复的结果。 5.4 如果测试中使用的流体导致垫圈材料发生变化，例如膨胀，则可能会影响结果并降低重复性。

1.1 This test method covers a means of evaluating the sealing properties of sheet, composite, and solid form-in-place gasket materials (see Classification F104 or F868 ) at room temperature, and may be used for fluid (gas or liquid) leak rate measurements. It utilizes relatively short hold times and is not intended to predict long-term performance in application. 1.2 This test method is suitable for evaluating the sealing characteristics of a gasket material under different press loads by measuring the leakage rate. This test method may be used as an acceptance test when the producer and user have agreed to specific test conditions for the following parameters: ( 1 ) test medium, ( 2 ) internal pressure of the medium, ( 3 ) press load on the gasket specimen, and ( 4 ) the surface finish of the platens. 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 to determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method is designed to compare sealing characteristics of gasket materials under controlled conditions by providing a precise measure of leakage rate at different press loads up to 32 MPa (4640 psi). 5.2 This test method is suitable for measuring leakage rates from 0.1 mL/min to as high as 5 L/min for gases. 5.3 This test method evaluates leak rates after time periods (typically 30 min) that result in a steady state leakage rate condition. Holding gasket materials under load and internal fluid pressure until steady state is achieved is required to obtain reproducible results. 5.4 If the fluid being used in the test causes changes, such as swelling, in the gasket material, it may affect results and diminish repeatability.