(4)
Precautions for Use of MIL-C-16173

(a) Use the same precautions for MIL-C-16173 that we list for waterdis-placing corrosion inhibiting compounds (Ref par. 4.B.(3)).

Volume 1

20-60-00
Page 15 OCT 01/02
CORROSION PREVENTION MANUAL
GENERAL INFORMATION
STANDARD PREVENTIVE MAINTENANCE PROCEDURES

(5) Compatability of MIL-C-16173

(a)  As these materials are aLl usually hydrocarbons, you can apply new

applications of a different compound over existing corrosion inhibi-tors without bad effects.

(6)  Cleaning Before Application of MIL-C-16173

(a)  The surface does not need to be extremely clean before you apply
these compounds. But you will get a better continuous film if you
clean the area first. Vacuum or wipe away loose dirt or other

unwanted matter. Then you can clean the surfaces, where necessary,
with the usual airplane cleaning agents or solvents.

(7)  
Application of MIL-C-16173

(a)  
You can use the same application procedures for MIL-C-16173 that we
list for BMS 3-23 water displacing compound (Ref par. 4.B.(7), (8)),
with the differences noted in steps (b)(c) below.

(b)  
Let the MIL-C-16173 compound dry. Do not wipe up puddles after 60
minutes.

(c)  
If the coated surface will touch another surface (such as insulation
blankets), let the coating dry tack-free. (Use only grades 1, 4, or

5. Grades 2 and 3 form soft films which would be damaged by such con-tact.)

(8)
Removal of MIL-C-16173

(a)  
You need to remove all of the compound before you try to paint the
surface. Solvent cleaning is also required before penetrant inspec-tion.

(b)  
Naptha can remove these compounds. Methyl Ethyl Ketone (MEK) or ace-tone is not recommended.

(c)  
When you use solvents to remove corrosion inhibitors, give the area
a good flow of air until the solvents evaporate.

G. MIL-C-11796 Corrosion-Preventive compound

(1)
This is a petrolatum-base compound, which is applied as a hot liquid.
The compound can be applied with a brush or a swab. Small parts can be
dipped in the liquid. The internal surfaces of tubes or other hollow
parts can be coated by a fill and drain method.

(2)
Types of MIL-C-11796

(a)  
Grade 1 compounds form a hard film. They can penetrate 3-8 mm and
have a melting point of 155°F or higher.

(b)  
Grade 1A compounds are similar to Class 1 compounds, but will not
cause an oil slick on water.

(c)  
Class 2 compounds form a medium film, and can penetrate 9-15 mm and
　
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