MIL-DTL-5593E
4.6.12 Water and alcohol resistance (see 3.4.11). Hose when subjected to the water and alcohol test
shall meet the requirements of 3.4.11. The following details shall apply:
a. Three test samples from the inner tube and three test samples from the outer cover shall be
immersed in a solution of 50% water and 50% alcohol, in accordance with SAE-AMS3002 for 24
hours.
b. The temperature of the water alcohol mix shall be at a temperature of 158 ±2 °F (70°C ±1.11°C).
c. At the end of the immersion period, the samples shall be removed from the solution and the tensile
strength shall be determined within 15 minutes in accordance with ASTM D380.
4.6.13 Oil resistance (see 3.4.12). The inner tube when subjected to oil shall meet the requirements
of 3.4.12. The following details shall apply:
a. Three test samples from the inner tube shall be immersed in fluid in accordance with
MIL-PRF-5606, MIL-PRF-87257, or MIL-PRF-83282 at a temperature of 158°F ±2 °F (70°C
±1.11°C) for 7 days.
b. At the end of the immersion period, the samples shall be removed from the fluid and allowed to
cool at room temperature for not less than 4 hours.
c. Tensile strength and elongation shall be determined in accordance with ASTM D380.
5. PACKAGING
5.1 Packaging. 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 activity 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 intended to be coupled with adapters
qualified to MIL-DTL-38726 to form hose assemblies in accordance with AN6270, for use as a flexible
connection on low-pressure air and vacuum instrument systems, automatic pilots, and all types of
pressure gages in use with these systems. The hose may be used with fitting, adapter hose to straight
pipe in accordance with SAE-AS5183.
6.1.1 Military unique rationale. The hose is a military-unique item because it is compatible with
associated components and equipment in military flight control and aircraft vacuum systems and is
capable of flexing and operating at temperatures ranging from -65°F to +160°F (-54°C to 71°C).
Commercial hose are not designed to withstand these extreme conditions or sudden environmental
changes, and would experience catastrophic failure.
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