MIL-DTL-8794F
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible, provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
advantageous life cycle cost.
3.2.2 Hazardous substances. The use of hazardous substances, toxic chemicals, or ozone
depleting chemicals shall be avoided whenever feasible.
3.3 Construction.
3.3.1 Elastomeric inner tube. The portion of the hose that is in contact with the fluids being
conveyed shall be a seamless synthetic rubber. The internal surface of the tube shall have a smooth
bore and shall be free from pitting. The synthetic rubber shall be compatible with hydraulic fluid, fuel, and
oil (see 3.3.7).
3.3.2 Reinforcing material. Hose shall contain a reinforcing wire braid which consists of one fiber
braid and one high tensile steel wire braid (CRES). The wire braid shall be braided to resist tension so as
to provide strength and limit expansion of the hose to a minimum. No length of hose shall contain
missing, broken or spliced wire braid or reinforcing material.
3.3.3 Outer cover. The outer cover shall consist of fiber braid impregnated with oil and between two
layers of synthetic rubber. The outer cover of the hose shall be oil and fungus resistant.
3.3.4 Vulcanization. The entire construction shall be vulcanized.
3.3.5 Operating temperature. Hose shall be capable of operating in ambient temperatures as
specified in table I.
TABLE I. Hose temperature application.
Application/operating temperature range 1/
Hose
size
Hydraulic
Fuel
Oil
-3
N/A 2/
-4
-65°F to +275°F
(-53.9°C to 135°C)
-5
-65°F to 160°F
-65°F to 250°F
-6
(-53.9°C to 71.1°C) (-53.9°C to 121.1°C)
-65°F to +160°F
-8
(-53.9°C to 71.1°C)
-10
-12
-16
-20
-40°F to 160°F
-40°F to 160°F
-40°F to 160°F
-24
(-40°C to 71.1°C) (-40°C to 71.1°C) (-40°C to 71.1°C)
-32
-40
-48
1/ Temperature range - ambient and internal fluid.
2/ Size -3 shall not be used in hydraulic applications.
3.3.6 Operating pressure. Hose shall withstand the operating pressures specified in table II without
leakage or evidence of imperfections.
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