MIL-PRF-14442E(AT)
3.5.5 Fluid resistance of exterior surfaces. The exterior surfaces of the fuel tanks shall
show no swelling, separation, blistering, or dissolution when exposed to fuel.
3.5.6 Permeability. Fuel tank permeability shall be less than 0.025 fluid ounces (fl-oz) per
square foot (ft2) per 24 hours for each specimen tested.
3.5.7 Tensile strength. The inner layer ply of the tank, without barrier, shall have a tensile
strength not less than 80 percent (%) of the value calculated, based on the original cross sectional
area of the ply.
3.5.8 Seam adhesion. The seam adhesion of the inner ply of the fuel tank shall be not less
than 12 pounds (lb). There shall be no failure of the seam.
3.5.8.1 Wet seam adhesion. The wet seam adhesion shall be not less than 50% of the dry
adhesion value.
3.5.9 Puncture resistance. The force required to puncture the fuel tank wall shall be not
less than 15 lb.
3.5.10 Identification marking. Each fuel tank shall have the following information
permanently and legibly marked on the face or surface in which the opening for the fuel-level gage
sending unit is located:
Army part number.
Vehicle nomenclature.
Name of manufacturer.
Date of manufacture (year and quarter).
Manufacturer's serial number.
Manufacturer's construction number.
Specification MIL-PRF-14442.
Date of acceptance.
Contract or order number.
3.5.10.1 Filler cap. The external surface of the filler cap shall be formed and painted with
diesel fuel (DF-A, DF-1, DF-2, and JP-8) resistant lacquer, and legibly marked in white lettering:
"Fuel (*) US Gal." (* to be filled in with usable capacity taken as the average capacity of the first
10 production tanks).
3.5.10.2 Hand-hole cover. The exterior surface of the hand-hole cover of each fuel tank
shall be legibly and permanently marked "OUTSIDE".
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