MIL-PRF-46176B
a. Military symbol BFS.
b. NATO code number H-547.
c. Eye hazard warning, as follows: "Prevent this fluid from coming in contact with
the eyes as it may cause irritation. Wash the hands thoroughly after exposure.
Upon accidental eye exposure, wash the eyes promptly with water for at least
fifteen (15) minutes. Eye hazard is neither severe nor permanent."
3.6 Environmental requirements.
3.6.1 High temperature stability. The equilibrium reflux boiling point of the brake fluid,
after the brake fluid has been subjected to a temperature of 185 ± 2°C for a minimum of 2 hours,
shall not decrease by more than 5°C from the equilibrium reflux boiling point prior to exposure to
the high temperature (see 4.3.6.1).
3.6.2 Low temperature. The low temperature properties of the brake fluid shall be
demonstrated by meeting the requirements specified in 3.6.2.1 through 3.6.2.3 (see 4.3.6.2).
3.6.2.1 Appearance at 55°C. The brake fluid shall show no stratification, separation,
precipitation, or crystallization after being subjected to a temperature of 55 ± 2°C for a minimum
of 6 hours (see 4.3.6.2.1).
3.6.2.2 Fluidity at -55°C. The brake fluid shall remain capable of flowing after being
subjected to a temperature of -55 ± 2°C for a minimum of 6 hours (see 4.3.6.2.2).
3.6.2.3 Appearance at 25°C. The brake fluid shall regain its original degree of clarity
after stabilizing at 25 ± 5°C (see 4.3.6.2.3).
3.6.3 High humidity. The properties of the humidified brake fluid shall be demonstrated
by meeting the requirements specified in 3.6.3.1 through 3.6.3.7 (see 4.3.6.3).
3.6.3.1 Water pick-up. The water pick-up of the brake fluid, humidified as specified in
4.3.6.3, shall not exceed 0.35% by weight (see 4.3.6.3.1).
3.6.3.2 Appearance at -40°C. The brake fluid, humidified as specified in 4.3.6.3, shall
show no stratification, separation, precipitation, or crystallization after being subjected to a
temperature of -40 ± 2°C for 144 ± 4 hours (see 4.3.6.3.2).
3.6.3.3 Fluidity at -40°C. The brake fluid, humidified as specified in 4.3.6.3, shall remain
capable of flowing after being subjected to a temperature of -40 ± 2°C for 144 ± 4 hours
(see 4.3.6.3.3).
3.6.3.4 Appearance at 25°C. The brake fluid, humidified as specified in 4.3.6.3, shall
regain its original degree of clarity after being stabilized at 25 ± 5°C for 4.0 ± 0.5 hours
(see 4.3.6.3.4).
7
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business