MIL-PRF-81309F
This is the U.S. Navy's current specification for corrosion inhibitor and water displacement compound for:
Type 1: Airframes
Type 2: Airframes
Type 3: Avionics
This specification replaces and supercedes MIL-C-81309E.
Now also a requirement for "general purpose" use
MIL-PRF-81309F is the Navy's newest performance requirement (a level above Mil Spec) for water displacement and corrosion prevention on airframes, avionics, and now general purpose use. If your favorite corrosion inhibitor is not on the Qualified Products List for this Mil Spec, there's a reason – it's not good enough. For the most advanced, longest-lasting and best-performing corrosion inhibitor made, nothing protects like CorrosionX.

