MIL-DTL-6000D
4.8.7.1 Iso-octane (see 3.5.7.1). Test samples when subjected to immersion in iso-octane shall
meet the adhesion requirements of 3.5.7.1. The following details shall apply:
a. A 4 inch (10.2 cm) length of hose shall be boiled for 1 hour, in reference fuel A in accordance
with ASTM D471.
b. The container in which the test is run shall be fitted with a reflux condenser.
c. The fuel and hose shall be allowed to cool for at least 24 hours.
d. For ring specimens, three 1 inch (25.4 mm) widths shall be cut from the center portion of the 4
inch (10.2 cm) length.
e. The adhesion shall be determined as specified in 4.8.7 within 30 minutes after removal from
the fuel.
4.8.8 Volume change.
4.8.8.1 Ethylene glycol immersion (see 3.5.8.1). Hose when subjected to ethylene glycol immersion
shall meet the requirements of 3.5.8.1. The following details shall apply:
a. Test specimens shall be immersed in a solution of 97 percent ethylene glycol, in accordance
with ASTM E1119, at a temperature of 286°F to 300 °F (141°C to 149°C) for 70 hours.
b. At the end of the immersion period, the specimens shall be removed from the solution and
cooled in fresh ethylene glycol at room temperature for 30 minutes.
c. The specimens shall then be wiped to remove any ethylene glycol from the surface and the
change in volume shall be immediately determined in accordance with ASTM D380.
4.8.8.2 Oil immersion (see 3.5.8.2). Hose when subjected to oil immersion shall meet the
requirements of 3.5.8.2. The following details shall apply:
a. Test specimens shall be immersed in oil no. 1 in accordance with ASTM D471, at a
temperature of 244°F to 261°F (118°C to 127°C) for 70 hours.
b. The container in which the test is run shall be fitted with a reflux condenser.
c. At the end of the immersion period, the specimens shall be removed from the oil and cooled in
fresh oil at room temperature for 30 minutes.
d. The specimens shall then be wiped to remove any oil from the surface and the change in
volume shall be immediately determined in accordance with ASTM D380.
4.8.8.3 Fuel immersion (see 3.5.8.3). Hose when subjected to fuel immersion shall meet the
requirements of 3.5.8.3. The following details shall apply:
a. Test specimens from the tube, in accordance with ASTM D380, shall be immersed in
reference fuel B, in accordance with ASTM D471, and JP-8, in accordance with
MIL-DTL-83133, at a temperature of 70°F to 81°F (21°C to 27°C) for 24 hours.
b. At the end of the immersion period, the specimens shall be removed from the fuel and wiped
to remove any fuel from the surface.
c. The change in volume shall be determined within 5 minutes in accordance with ASTM D380.
4.8.9 Tensile strength (see 3.5.9). The tensile strength shall be determined in accordance with
ASTM D412 and shall meet the requirements specified in 3.5.9.
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