C. BMS 3-26 Corrosion Inhibiting Compound
(1)
General
(a)
This is an organic compound of nonvolatile base materials in sol-vents to make a fluid. It does not contain silicones. This compound
can be dipped, brushed, or sprayed. After it dries, it makes a trans-parent but visible protective layer.
(b)
Coated surfaces become dry to the touch after 24 hours. The layer is
not easily rubbed or worn off, but must be applied again if the sur-face is washed frequently.
(2)
Types of BMS 3-26
(a)
Type I --Makes a continuous layer of medium thickness with a drop
melting point of 140°F minimum.
(b)
Type II --Makes a continuous thick layer with a drop melting point
of 200°F minimum.
(3)
Materials qualified under BMS 3-26
Type Material Vendor
I Ardrox 3321 Ardrox Inc., V23373
Dinitrol AV25B Dinol International, VOL040
Dinitrol AV25B-2 Dinol International, VOL040
LPS Formula B997 Holt Lloyd Corp., V66724
II Ardrox 3322 Ardrox Inc., V23373
Dinitrol AV100D Dinol International, VOL040
(Replaces AV100B)
LPS Formula B1007 Holt Lloyd Corp., V66724
(4) Precautions for Use of BMS 3-26
(a) Use the same precautions for BMS 3-26 that we list for BMS 3-23 water
displacing compound (Ref par. 4.B(3)).
Volume 1
20-60-00
Page 8
OCT 01/02
CORROSION PREVENTION MANUAL
GENERAL INFORMATION
STANDARD PREVENTIVE MAINTENANCE PROCEDURES
(5)
Compatibility of BMS 3-26
(a) As these materials are usually hydrocarbons, you can apply a differ-ent compound over existent corrosion inhibitors without bad effects.
(6)
Cleaning before Application of BMS 3-26
(a) The surface does not need to be extremely clean before you apply
these compounds. 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)
Methods of Application of BMS 3-26
(a)
You can use the same application procedures for BMS 3-26 that we list
for BMS 3-23 water displacing compound (Ref par. 4.B.(7),(8)), with
the differences noted in steps (b) and (c) below.
(b)
Let the BMS 3-26 compound dry. Do not wipe up puddles after 60 min-utes.
(c)
If the coated surface will touch another surface (such as insulation
blankets), let the coating dry tack-free.
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