MIL-PRF-11430F
3.2.4 Safety. The material used for the outer shell and insulation shall be nonflammable and
nontoxic.
3.2.5 Insulation of 5-gallon water can. The insulated case shall keep water in a fill 5-gallon
water can from freezing at temperatures set at -40°F for 20 hours.
3.3 Support or ownership requirements. The insulated case shall meet the following
requirements.
3.3.1 Weight. The weight of the insulating case shall be no more than ten pounds.
3.3.2 Thickness. The thickness of the outer material and insulation used in the case shall not
exceed 1 1/2 inches.
3.3.3 Rigid bottom and sides. The bottom of the case shall be made of a rigid material and it
shall extend up from the bottom along the front, back and sides for a distance of at least 1 1/2
inches.
3.3.4 Durability. The insulating case shall withstand the rigors normally exerted by field
operations when dropped.
3.3.5 Identification marking. The identification marking shall be located on the inside of the
case cover and shall be applied with a marking medium that is well-defined, clearly legible and
with characters that are approximately 1/4 inch in height. The marking medium shall be durable
and compatible with the material used on the inside of the case cover. The following information
is required: "CASE, MILITARY WATER CAN, INSULATED; Contract No; Stock No. and
Contractor's name".
3.3.5.1 Special marking. The letters, "US" shall be permanently placed on the outside of both
sides of the case. The letters shall be in block form and shall be at least 1 inch in height, and the
marking medium shall be durable and compatible with the material used on the outside of the
case.
3.4 Environmental requirements. The insulated case with fill 5-gallon water can shall be
functional in ambient temperatures from -40°F to 125°F.
3.5 Interface and interoperability requirements. The insulating case shall be designed for
use with the 5-gallon water can (NSN 7240-00-089-3827 or NSN 7240-0 1-365-5317). The water
can shall fit snugly inside the insulated case.
3.6 Government-loaned equipment. The Government shall supply two 5-gallon water cans to
be used as a guide to fabricate the insulated case (see 3.5 and 6.7).
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