该方法用于测定航空衍生燃气轮机发动机润滑剂对弹性材料的体积膨胀效应。它提供了对候选润滑剂对弹性体膨胀影响的预期性能的洞察，并提供了确定候选润滑剂是否符合规范要求的数据。本ARP基于联邦标准791，方法3604。

This method is used for determining the volume swelling effect of aero-derived gas turbine engine lubricants on elastomeric materials. It provides insight into the expected performance of a candidate lubricants impact upon elastomer swell and provides data to determine if the candidate lubricant meets specification requirements. This ARP is based upon Federal Standard 791, Method 3604.