MIL-DTL-27267D
4.6.3.12 Fuel resistance. Samples shall be subjected to testing in accordance with SAE-AS2078.
Conformance shall be as specified in 3.5.3.12.
4.6.3.13 Corrosion. Hose assemblies when subjected to corrosion testing shall meet the
requirements of 3.5.3.13, the following details shall apply:
a. Two samples shall be pressurized to the applicable operating pressure specified in table III.
b. The samples shall then be mounted in a vertical position and immersed for at least 5 minutes
in a 2.5 percent NaCl solution, by weight.
c. They shall then be air-dried at 140°F ±10°F (60°C ±5.5°C) for 25 minutes.
d. This cycling shall continue for at least 172 hours while maintaining the specified pressure on
the hose.
e Following the cycling, one of the samples shall be subjected to room temperature burst
pressure test (see 4.6.3.6) and the other sample shall be subjected to high temperature burst
pressure test (see 4.6.3.7).
4.6.3.14 Pneumatic leakage. Samples shall be subjected to testing in accordance with SAE-AS2078.
Conformance shall be as specified in 3.5.3.14.
4.6.3.15 Pneumatic effusion. The samples that were subjected to the pneumatic leakage test shall
be tested for pneumatic effusion in accordance with SAE-AS2078. Conformance shall be as specified in
4.6.3.16 Pneumatic surge. The samples that were subjected to the pneumatic effusion test shall
then be tested for pneumatic surge in accordance with SAE-AS2078. Conformance shall be as specified
in 3.5.3.16.
4.6.3.17 Cleanliness. Both ends of the hose length shall be visually inspected to determine if caps or
plugs are installed. Conformance shall be as specified in 3.5.3.17.
5. PACKAGING
5.1 For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel,
these personnel need to contact the responsible packaging activity to ascertain packaging requirements.
Packaging requirements are maintained by the Inventory Control Point s packaging activities within the
Military Service or Defense Agency, or within the Military Service s system commands. Packaging data
retrieval is available from the managing Military Department s or Defense Agency s automated packaging
files, CD-ROM products, or by contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful but is not
mandatory.)
6.1 Intended use. The hose covered by this specification is military unique due to its ability to
maintain the operating pressure, specified in table III, even under extreme temperature conditions ranging
from -67°F to 450°F (-55°C to 232°C). This hose is intended for use in high-temperature fuel, lubricating
oil, water-alcohol, chemical-fluid, hydraulic and pneumatic systems that allow some gaseous effusion
through the hose wall. This hose should not be used outside the specified operating temperature range
and pressure. Sizes 20Z and -24Z should not be used in systems where the peak pressures are greater
than 1000 psi (7 MPa).
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