Hose and hose assemblies covered by this specification are intended for use as flexible connections in air or vacuum brake systems on automotivevehicles.

Military unique rationale. The hose and hose assemblies are military unique because they are to be used for applications operating in a temperature range not exceeding +200°F (93.33°C) and not below -60°F (-51.11°C). Commercial components are not designed to withstand these extreme conditions or sudden environmental changes and would experience catastrophicfailure.

Vacuum hose. Type II hose is intended for, but not limited to, two different specific uses as follows:

Style A - Heavy-duty hose for service on truck-trailer combinations and similar applications.

Style B - Light-duty hose for service in conjunction with the power brakingsystem on passenger cars and light trucks, where hose is used in a protectedlocation.