Military Fluids
MIL-PRF-27601C

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DESCRIPTION	REQUIREMENT	TYP. RESULT	TEST METHOD
Kinematic Viscosity, Centistokes
@ 40 °C, minimum	15 cSt	14.2 cSt	ASTM-D455
@ 100 °C, minimum	3.5 cSt	3.7 cSt	ASTM-D455
@ -40 °C, maximum	3000 cSt	2450 cSt	ASTM-D455
Trace Sediment, mL, max	0.005	0.001	ASTM D-2273
Pour Point, °C, max	-54°C	< -65°C	ASTM-D97
Flash Point, °C, minimum	200°C	215°C	ASTM-D92
Fire Point, °C minimum	230°C	242°C	ASTM-D92
Total acid number, max.	0.20 mg KOH/gm	<0.1 mg KOH/gm	ASTM-D974
Water content, ppm, max	100	30	ASTM-D1744
Color	Clear	PASS	Visual
Particulate Contam, Size
5 to 15	10,000 max	PASS	ASTM-F312
16 to 25	1000 max	PASS	ASTM-F312
26 to 100	150 max	PASS	ASTM-F312
>100	5 max	PASS	ASTM-F312

Radcolube® FR601 is a military qualified synthetic based (hydrogenated polyalphaolefin) fire resistant hydraulic fluid. The fluid is used in hydraulic systems requiring an operational fluid that can perform in high temperature applications from -40°C to 290°C. Radcolube® FR601 offers excellent hydraulic properties, oxidative stability, and anti-wear protection in both military and industrial/commercial applications.
Radcolube® is a trademark of RADCO INDUSTRIES, INC.

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MIL-PRF-27601 C