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MIL-F-5577B
4.5.2.6.1.2 Fittings. Unless otherwise speci-
fied by the procuring activity, fittings shall be
subjected to adhesion tests in accordance with
ANA Bulletin No. 439.
4.5.3 Fitting assembly tests.
4.5.3.1 Type I fittings.
4.5.3.1.1 Fluid resistance and extreme tem-
perature. That part of the fitting containing
the rubber seal or gasket material shall be as-
sembled to a mating aluminum plate 1/4 inch
thick maximum having a surface roughness of
90 roughness height rating in accordance with
Standard MIL-STD-10 simulating an actual
installation. The bolt or bolts required to
make the assembly shall be lubricated with JP-
4 fuel conforming to Specification MIL-J-5624,
and the nominal installation torque specified by
the manufacturer shall be applied. The fitting
assembly, mounted in a vibration jig Conform-
ing to figure 1, shall be subjected to the fuel
resistance and extreme temperature test de-
scribed in table VII. A second fitting assembly
will be used for the test described in table VIII.
Any indication of fluid leakage, deterioration,
or damage shall constitute failure unless it can
be shown that the leakage was caused by "O"
ring failure. In case of "0" ring failure, the
4.5.2.6 Adhesion.
"O" ring may be replaced and the test con-
4.5.2.6.1 Adhesion to metal.
tinued.
4.5.2.6.1.1 Fitting stock. The adhesion of
4.5.3.1.2 Wicking. The system Shall be filled
fitting rubber stock to the applicable metals
shall be determined by ASTM Method D429-
with JP-4 fuel conforming to Specification
55T Method A or B on specimens as received
MIL-J-5624, shall contain a suitable staining
agent, and be pressurized to 5 psi. The fitting,
and within 5 minutes after immersion for 7
days in the referenced test fuels.
with sealing plate, may be removed from the
11

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