MIL-PRF-26385G
4.6.11 Low temperature. The hose shall be subjected to -65° ± 5°F for 48 hours. After this
period and while still at this temperature, the hose shall be subjected to the flexibility test. After
returning to room temperature, the hose shall be subjected to the leakage, delamination, and odor
tests.
4.6.12 High temperature. The hose shall be subjected to 160° ± 5°F for 48 hours. While still at
160°F, the hose shall be subjected to the flexibility test. After returning to room temperature, the
hose shall be subjected to the leakage, delamination, and odor tests.
4.6.13 Ozone resistance. Samples of the end cover, inner liner, and elastomer materials shall be
tested in accordance with ASTM-D1149 (see 6.3). The test samples shall be elongated 20%,
placed in an ozone free atmosphere for 24 hours, and then subjected to an ozone environment.
The temperature shall be 100° ± 5°F, the ozone concentration shall be 120 ± 10 parts per million
by volume, and the air velocity across the sample shall be at least 2 feet per second. The
material shall be exposed to these conditions for 60 minutes. The test slabs shall be examined
under 10X magnification for evidence of damage such as blooming, checking, or cracking.
4.6.14 Age. The age of the hose shall be verified to be no more than 12 months from cure date
to the acceptance date in accordance with SAE-AS1933.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When actual 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 which may be helpful, but
is not mandatory.)
6.1 Intended use. The hoses covered by this specification are intended for use with aircraft
oxygen and pressurizing systems. The hoses supply air or oxygen for breathing or pressurizing
purposes when used with altitude suits, anti-G suits, and ejection seat or escape capsule
equipment.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a. Title, number, and date of this specification.
b. Size (see 1.2).
c. When first article is required (see 3.1).
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