MIL-DTL-81581/3B
3.4 Talc. Talc shall not be used in the manufacturing process of the hoses furnished under
this specification sheet.
3.5 Design and construction. The hose assembly shall be in accordance with the general
specification and with the applicable drawing, NAVAIR 279AS100.
3.6 Performance. Unless otherwise specified herein, the performance of the hose assembly
shall be as specified in the general specification, consistent with the applicable performance
requirements for the applicable tests and inspections specified herein.
3.6.1 Elongation.
3.6.1.1 Procedure I. When tested as specified in the general specification, the increase in
length of the hose shall be not greater than 12 percent of the original hose length.
3.6.1.2 Procedure II. When tested as specified in the general specification, the permanent
set of the hose shall be not greater than 2 percent of the original hose length when measured 2
minutes after removal of load.
3.6.2 Strength.
3.6.2.1 Tensile load. When tested as specified in the general specification, there shall be no
indication of separation of the end fittings or molded ends from the hose assembly.
3.6.2.2. Static load. When tested as specified in the general specification, the hose shall not
show a deflection of greater than 25 percent of original value on the outside diameter. With the
load removed, the outside diameter of the hose shall be within 5 percent of original value.
4.
VERIFICATION
4.1 Sampling and inspection. Sampling and inspection shall be in accordance with the
general specification and as specified herein.
4.1.1 Qualification inspection. The qualification inspection of the hose assembly shall
consist of the following examinations and tests from the general specification:
Visual examination
Elongation, procedure II
Odor, procedure I
Cleanliness, procedures I and II
Leakage, procedure III
Flexibility, procedure II
Minimum burst pressure, procedure III
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