Synthetic External Hydraulic (HEX) Fluid (2075-S) for Submarine Applications

The primary objective of this Phase II program is to fully develop and qualify a cost effective synthetic replacement fluid for the MIL-PRF-17672E petroleum-based hydraulic fluid currently used by the Navy. The Phase II program will result in a synthetic version (2075-S) of the 2075-TH external hydraulic (HEX) fluid for use on Navy submarines. The synthetic hydraulic fluid technology developed under this program will show significant improvements in fluid oxidative resistance, performance additive stability, and seawater contamination tolerance in extended service life platforms. The Navy will benefit from integration of this advanced synthetic formulation for HEX fluids (2075-S) into the submarine fleet by providing Fleet operators and maintainers with an improved and extended-service-life performance fluid that delivers reduced friction wear, lowered component torque stresses, and better control of in-service operating temperatures in rolling element load zones.