Technical data

6.12.18.2 Uses. This coating is intended for the protec-
tion of aircraft integral fuel tanks against corrosion in a
service temperature range of -65° F to +250° F.
6.12.18.3 Mixing.
• MIL-C-27725/SAE AMS-C-27725 is flam-
mable and toxic to eyes, skin, and respiratory
tract. Eye and skin protection required. Con-
sult Bioenvironmental Engineering to deter-
mine proper respiratory and ventilation re-
quirements.
• The coating material contains harmful sol-
vents and free isocyanates. Inhalation of vapor
may cause irritation of the nose, throat, and
lungs, and may cause sensitization. Vapors or
liquid contact with the eyes or skin may cause
severe irritation.
• Safety and health procedures are mandatory
and no deviation will be permitted except by
written approval of the Office of Safety and/or
Bioenvironmental Engineer. It is the responsi-
bility of the immediate supervisor to ensure
that all safety and health procedures are fol-
lowed without deviation.
• Personnel applying the coating by spray or
brush or those required to reenter coated fuel
tanks before complete cure shall be protected
by wearing: full-face air supplied respirator
with air flowing before tank entry until exiting
the tank; white cotton coveralls; cotton booties
or cotton socks; rubber chemical resistant
gloves or surgical type gloves; and cotton head
covering.
• All clothing shall be washed after each use.
• Place all material used to mop up spilled
coating or runs in coating into water immedi-
ately. A small container of water shall be
provided in the immediate area.
• Blowers, which are grounded and bonded to
the aircraft, shall be circulating air in the fuel
cells/tanks before and during entry of person-
nel to perform any operation such as cleaning.
Air shall flow so that vapor will be carried
away from the operator.
• MIL-C-27725/SAE AMS-C-27725 has a flash
point of 266° F open cup, therefore, can
present a fire hazard when heated or atomized.
Some materials used in this operation have
flash points as low as 20° F and will ignite if
exposed to a flame or spark.
• If MIL-C-27725/SAE AMS-C-27725 is
spilled in the repair area, evacuate the area and
call the Fire Department. Neutralize with
strong ammonia solution, then flush with
water.
NOTE
Do not mix more material than can be used in a
5-hour period.
Mix coating components within an approved ventilated paint
booth. If a booth is not available, personnel shall wear an
air-supplied respirator, and mixing shall be accomplished so
that vapors are exhausted to an area as approved by the
Bioenvironmental Engineer. Mix and blend the two compo-
nents of the coating thoroughly for a minimum of 5 minutes.
Do not mix in contaminated containers. Stir the material with
TO 1-1-8
6-21