Military Fluids
Radcolube® FR257
MIL-PRF-87257 B
Formerly MIL-PRF-87257 A

Radco Industries, Inc.	Qualification Number: MLB-06-04
PO Box 305	Qualification Date: 11 July 2006
LaFox, IL 60147	Manufacturing Location: LaFox IL 60147
Telephone: (800) 854-4865	Fax: (630) 232-7968

DESCRIPTION	REQUIREMENT	TYP. RESULT	TEST METHOD
Kinematic Viscosity, Centistokes
@ 40 °C, minimum	6.7 cSt	6.8 cSt	ASTM-D455-10
@ 100 °C, minimum	2.0 cSt	2.1 cSt	ASTM-D455-10
@ -40 °C, maximum	550 cSt	456 cSt	ASTM-D455-10
@ -54 °C, maximum	2,500 cSt	2291 cSt	ASTM-D455-10
Evaporation loss (%wt), maximum	20.0	17.0	FED STD 791-350.2
Pour Point, °C, maximum	-60°C	< -81°C	ASTM D5949-10
Flash Point, °C, minimum	160°C	170°C	ASTM D92
Fire Point, °C, minimum	170°C	192°C	ASTM D92
Total Acid Number, maximum	0.20 mg KOH/g	0.10 mg KOH/g	ASTM D664
Water Content, ppm maximum	100 ppm	11 ppm	ASTM D 6304-07
Solid Particle Contamination per 100 ml,  microns
5 to 15	10,000 max	4,034	FED-STD-791D 3012
16 to 25	1,000 max	436	FED-STD-791D 3012
26 to 50	150 max	108	FED-STD-791D 3012
51 - 100	20 max	10	FED-STD-791D 3012
+ 100	5 max	0	FED-STD-791D 3012

Radcolube® FR257 is a military qualified synthetic fire resistant hydraulic fluid consisting of synthetic hydrocarbon base oils and additives. Designed for safe use in low temperature aircraft and missile hydraulic systems, Radcolube® FR257 demonstrates excellent low temperature properties, oxidative stability, and fire protection in both military and industrial/commercial applications.
Radcolube® is a trademark of RADCO INDUSTRIES, INC

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MIL-PRF-87257B