MIL-DTL-26499 Hose Assembly, Metal, Flexible, Breathing OxygenThis specification covers one type of metal flexible hose assembly with a nominal working pressure of 2,400 psi \(165.47 bar\) in the operating temperature range from -65 degrees F to +160 degrees F \(-53.89 degrees C to +71.11 degrees C\).

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MIL-DTL-26499E

Nominal

Dash

length "L"

number

(cm)

Specify in inches

-XX

(see note 3)

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are given for information only.

3. Tolerance for lengths less than 24 inches (60.96 mm) shall be �.250 (6.35). For lengths less than

24 inches the tolerance shall be �1%.

FIGURE 1. Design and construction.

3.4.1 Corrugated hose. The flexible pressure carrying hose shall be helical or annular corrugated from

corrosion-resistant, seamless or welded and redrawn steel tubing. The corrugated hose shall be

inspected in accordance with 4.7.1 to determine if the hose inside diameter is.250 inch (6.35 mm), +.063

inch (1.60 mm), -.016 inch (0.41 mm). A corrugated hose sample not within this tolerance shall be cause

for rejection of the lot.

3.4.2. Internal support coil. The corrugated hose shall be wrapped with a corrosion resistant steel

support coil.

3.4.3 Braided outer covering. The outer covering shall be one or more layers of corrosion-resistant

steel-wire braid.