MIL-PRF-26626F
6.6 Toxicological formulations. The contractor should have the toxicological formulations
and associated information available for review to evaluate the safety of the material for the inner
liner.
6.7 Lubrication. The previously used lubricant has been Christo-lube. The quantity of the
lubricants used did not exceed that required to generate a thin film. No lubricants, other than water,
were used in assembly.
6.8 Definitions.
a.
Burst pressure. The burst pressure is the greatest applied internal pressure to which
the hose assembly can be subjected before ultimate strength is exceeded.
b.
Health hazards. Materials such as cadmium, lead, and polyvinyl chloride can be
susceptible to outgasing in the presence of pure oxygen and at elevated temperatures.
Outgasing by these and many other materials when used in breathing oxygen
equipment are potential health hazards.
c.
Hose assembly. The hose assembly is the seamless tetrafluorethylene inner liner, or
equivalent, reinforced with corrosion resistant wire braid, and the AN818 coupling
nuts or SAE AS4395 end fittings permanently attached.
d.
Leakage. Previous procurement leak tests were performed by submersion of the
hose assembly in water. A leak was defined as the breakaway of one bubble per 30
seconds from a localized area after 5 minutes of stabilization.
e.
Proof pressure. Proof pressure is that internal pressure to which the hose assembly is
pressure tested to prove its integrity without causing damage.
6.9 Supersession data. The M26626 dash numbers superseding MS 24548 dash numbers
are listed in table II.
TABLE II Supersession data.
New PIN
Superseded dash number
M26626-5-(L)
MS24548-5-(L)
M26626-6-(L)
MS24548-6-(L)
M26626-8-(L)
MS24548-8-(L)
6.10 Subject term (key word) listing.
Aircraft oxygen systems
Breathing oxygen
Liquid oxygen
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