MIL-STD-2199 Coverings For Waterborne Main Propulsion Shafting On U.S. Naval Surface Ships And SubmarinesThis standard covers standard practices for the application of a four-layer shaft covering system on the body areas of waterborne main propulsion shafting. Material and application requirements are also provided for coatings that are to be applied to waterborne shaft flange assemblies.

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MIL-STD-2199A APPENDIX A

Propeller Shaft Covering System

Second Layer (Coating)

First Coat (Gray)

Part A

Propeller Shaft Covering System

Second Layer (Coating)

First Coat (Gray)

Part B

b.    Start the coating application no sooner than 30 minutes after completion of primer application. c.        Individually agitate the two components, as shown on figure A-4.

d.    Add the agitated components to the appropriate reservoirs, as shown on figure A-5. e.    Start at the sleeve end.  Spray into this area around the entire circumference.

f.     Apply the first coating layer to the shaft body until coverage is complete.  A close-up of spraying operation is shown on figure A-7.

g.    Finish the first coat at the other sleeve end.  Spray into this area around the entire circumference.

h.    The layer thickness shall be about 10 mils (0.010 of an inch).  Since the coating is 100 percent solids, wet film and dry film thickness shall be the same.

i.     Allow 2 hours for the first coat to cure.  DO NOT solvent wipe the first coating prior to application of the second.

FIGURE A-7.  Reaction spray of  elastomeric coating.

J.     Inspect the shaft-to-sleeve interface and verify that the coverage is complete (see figure A-8).

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