MIL-STD-419E涵盖了液压传动应用中安装前和液压试验后清洁和保护有色金属和黑色金属以及合金管道、卡套管和配件的基本方法的要求。本标准适用于填充有石油、合成聚α-烯烃（PAO）流体、磷酸酯类流体或水基流体的系统中使用的液压部件。

MIL-STD-419E covers the requirements governing the basic methods of cleaning and protecting nonferrous and ferrous metal and alloyed pipe, tubing, and fittings prior to installation and after hydraulic tests in hydraulic power transmission applications. This standard is applicable to hydraulic components used in systems filled with either petroleum oil, synthetic poly-alpha-olephin (PAO) fluid, phosphate ester type fluid, or water based fluid.