MIL-DTL-81581/5B
takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3.
REQUIREMENTS
3.1 Requirements. Requirements shall be in accordance with MIL-H-81581 and as
specified herein.
3.2 Qualification. The hose assemblies furnished under this specification shall be products
that are authorized by the qualifying activity for listing on the applicable qualified products list
before contract award (see 4.1.1). Unless otherwise specified, each type and style shall be
qualified separately.
3.3 First article. When specified (see 6.2), a sample shall be subjected to first article
inspection in accordance with 4.1.2.
3.4 Design and construction. The hose assembly shall be in accordance with the general
specification and with the applicable hose assembly of MS22055.
3.4.1 Oxygen mask to regulator hose connector. A fitting, when required, as shown on
MS22055, shall be attached to one end of the hose by means of an MS22058 connector
assembly. The connector assembly shall be tightened so that a pull of at least 40 pounds is
required to separate the assembly from the hose. One additional connector assembly shall be
furnished for attaching the hose to the regulator.
3.5 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.
3.5.1 Polarity (color code) and electrical continuity. When tested as specified in the general
specification, the resistance measured between all points designed to be electrically connected
shall be as specified in the general specification with an allowable resistance of 0.3 ohms per
foot in length of the electrically wired portion of the hose.
3.5.2 Elongation. The Type I hose, when tested as specified in the general specification,
shall show an increase in length of not less than 40 percent, except for the 12 inch or less lengths
which shall show an increase in length of not less than 30 percent. The Types II and III hoses,
when tested as specified in the general specification, shall show an increase in length of not less
than 5 percent. The permanent set for all hoses shall be not greater than 5 percent.
3
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