1.1 本试验方法涵盖了在不同温度和压力水平下腐蚀条件下对垫圈的评估。如果法兰足够平面（行业接受），则测试装置可以是搪玻璃的，从而在从全真空到装置允许压力额定值的压力下，对所有化学品（氢氟酸除外）具有耐低温至260°C（500°F）的能力，或者由其他合适的材料制成。描述的测试单元( 图1 )在260°C（500°F）时，内部设计额定压力为1034 kPa（150 psi）。 图。 1. 测试单元 1.2 以国际单位制表示的数值应视为标准。 1.3 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、健康和环境实践，并确定监管限制的适用性。 有关具体的危险声明，请参阅第节 5. . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 该测试方法旨在模拟现场操作条件下比较所有类型的垫片。因此，可以在启动化学过程之前测量垫片的性能。 5. 试验装置的设计提供了最大范围的耐腐蚀性，因此有可能获得有意义的结果。经买卖双方同意，本试验方法可作为常规试验。

1.1 This test method covers the evaluation of gaskets under corrosive conditions at varying temperature and pressure levels. The test unit may be glass lined if the flanges are sufficiently plane (industry accepted), thus providing resistance to all chemicals, except hydrofluoric acid, from cryogenic temperatures to 260°C (500°F) at pressures from full vacuum to the allowable pressure rating of the unit, or made of other suitable material. The test unit described ( Fig. 1 ) has an internal design pressure rating of 1034 kPa (150 psi) at 260°C (500°F). FIG. 1 Test Unit 1.2 The values stated in SI units are to be regarded as the standard. 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 hazards statements, see Section 5 . 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 ====== 3.1 This test method is designed to compare all types of gaskets under simulated field operating conditions. Performance of a gasket can thus be measured prior to the start-up of chemical processes. 5 The design of the test unit provides maximum range of corrosion resistance so that meaningful results are possible. This test method may be used as a routine test when agreed upon between the purchaser and the seller.