MIL-PRF-17331L

RADCOLUBE® 17331 (2190 TEP)

LUBRICATING OIL, STEAM TURBINE AND GEAR, MODERATE SERVICE

Lubricating oil intended for use in main and auxiliary turbines and gears, air compressors and certain hydraulic equipment as well as for general mechanical lubrication.

Qualification Numbers

Ser 05S/2019-028
Ser 05S/2020-160

Qualification Date

22 February 2019
4 May 2020

ISO 9001: 2015 Certification Number

C2021-00038

Military Symbol

2190 TEP

NATO Code

O-250

Shelf Life

24 Months from DOM

National Stock Numbers (NSN)

9150-01-368-7076      Oblong Gallon
9150-01-370-2583      5 Gallon Pail
9150-01-368-7075      55 Gallon Drum
9150-01-372-6915      Bulk

CharacteristicsRequirementTypical ResultsTest Method
Sulfur, %Report0.00%ASTM D129
Acid number, mg KOH/g oil, max.0.30.26ASTM D974
Corrosion (in presence of salt water)NonePassASTM D665 Procedure B
Copper Strip Corrosion test at 100 °C (212 °F), appearance, max.Classification 11BASTM D130
Oil CompatibilityPassPassParagraph 4.4.5
Water, percent, max.0.01%0.00%ASTM D6304
Gravity, APIReport31.4ASTM D1298
Air release time, (minutes at 50°C, max.)206.1ASTM D2427
Flash point, °C (°F), min.204°C (400°F)254ASTM D92
Pour point, °C (°F), max.-6°C (20°F)-24°C (-11.2°F)ASTM D97
Viscosity  ASTM D445
mm2/s at 4.4°C (40°F), max.870755 
mm2/s at 40°C (104°F)77 - 9779 
mm2/s at 100°C (212°F), min.8.09.7 
Emulsion test, after 30 minutes settling time  ASTM D1401
Oil layer/water layer/emulsion, max.41 / - / 341/39/0 
Oxidation test, after 1000 hours:  ASTM D943
Acid number, mg KOH/g, max.2.00.15ASTM D974
Total sludge, mg, max.10011.4ASTM D4310
Total iron, mg, max.1001.8ASTM D4310
Total copper, mg, max.1001.2ASTM D4310
Oxidation by rotating pressure vessel, minutes to failure, min.200>500ASTM D2272
Scuffing load capacity (FZG), failure load stageLoad Stage 910ASTM D5182
Wear test, scar diameter, mm, max.0.330.26ASTM D4172
Homogeneity, separationNoneNoneParagraph 4.4.1
Foaming characteristics:  ASTM D892
After blowing/after 10 minutes   
Sequence I, mL, max.65/00/0 
Sequence II, mL, max.65/00/0 
Sequence III, mL, max.65/00/0 
Cleanliness, mg/100 mL, max.2.50.6ASTM D4898

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