Military Lubricant Fluids

MIL-PRF-87252E

XCELTHERM®500M

COOLANT FLUID, DIELECTRIC, HYDROLYTACALLY STABLE

XCELTHERM® 500M Coolant Fluid is a military-qualified dielectric/cooling fluid consisting of a synthetic hydrocarbon base oil and additives. Designed for safe use in land and airborne closed loop cooling systems, XCELTHERM® 500M demonstrates excellent heat transfer fluid properties, oxidative stability and dielectric characteristics in both military and commercial applications from -54°C (-65°F) to 135°C (275°F).

Qualification Numbers

AFPET/PTPT 11-006

Qualification Date

20 April 2011

NATO Code

S-1748

ISO 9001: 2015 Certification Number

C2018-00035

National Stock Numbers Available From Radco

* 5 Gallon Pails Available at Request

9150-01-306-2475             Quart

9150-01-336-7174             Gallon-Oblong

9150-01-304-0885             Gallon-Round

9160-01-380-2175             Gallon-Oblong (Insulating Oil, Electrical)

9150-01-306-2470             55 Gallon Drum

CHARACTERISTICS
REQUIREMENT
TYPICAL RESULTS
TEST METHOD
Kinematic Viscosity,
centistokes
@ 40 °C, minimum 5.0 cSt 5.14 cSt ASTM D445
@ 100 °C, minimum 1.65 cSt 1.71 cSt ASTM D445
@ -40 °C, maximum 300 cSt 267.5 cSt ASTM D445
Low Temperature Viscosity Stability @ -54°C, maximum
Viscosity @ 1.5hrs, maximum 1,300 cSt 1,132 cSt ASTM D2532
Viscosity @ 3hrs, maximum 1,300 cSt 1,140 cSt ASTM D2532
Viscosity @ 72hrs, maximum 1,300 cSt 1,142 cSt ASTM D2532
Flash Point, °C, minimum 150°C 158°C ASTM D92
Fire Point,°C minimum 160°C 178°C ASTM D92
Total acid number, maximum 0.20 mg KOH/gm <0.1 mg KOH/gm ASTM D664
Water content, ppm, maximum 50 ppm 11 ppm ASTM D6304
Solid Particle Contamination per 100 ml, microns
5 to 15 10,000 max 68 FED STD 791D 3012
16 to 25 1,000 max 10 FED STD 791D 3012
26 to 50 150 max 8 FED STD 791D 3012
51 to 100 20 max 2 FED STD 791D 3012
+100 5 max 0 FED STD 791D 3012
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Heat Transfer Fluids

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