MIL-PRF-83861 Filter Elements, Disposable, Fluid Pressure, Hydraulic Line, 5 And 15 Micron AbsoluteThis specification covers disposable hydraulic line filter elements that retain all particles larger than 5 or 15 microns. For use, the element is inserted in a canister prior to use in a hydraulic system, and is intended for use with hydraulic fluids conforming to MIL-PRF-5606, MIL-PRF-83282, and MIL-PRF-87257.