PROPERTIES

MIL-PRF-23827C

TYPICAL

Type II

Oil type

Synthetic

Synthetic ester

(Diester)

Thickener type

Clay

Microgel

Base oil viscosity

mm²/s

@ –40°C

–

1150

@ 40°C

–

10.3

@ 100°C

–

3.1

Useful operating temperature

–73 to

range

°C

–

+149

Drop point

°C

165min

260+

Worked penetration @ 25°C

270 to 310

296

Unworked penetration @ 25°C

200 min

283

Bomb oxidation pressure

drop @ 99°C

100 hrs

kPa

70 max

62

500 hrs

kPa

105 max

96.5

Oil separation @ 100°C,

in 30 hrs

% m

5 max

3.0

Water resistance test loss

@ 38°C

% m

20 max

0.80

Evaporation loss in 22 hrs

@ 100°C

% m

2.0 max

0.5

Mean Hertz Load

kg

30 min

60

Antifriction bearing performance

@ 121°C

hrs

–

2460

Copper corrosion 24 hrs @ 100°C

Must pass

Passes

Bearing protection 2 days @ 52°C

Must pass

Passes

Colour

–

Buff

U.S.

    Approved MIL – PRF-23827C (Type II)

British

–

French

Equivalent DCSEA 354/A

Russian

–

NATO Code

G-354

Joint Service Designation

–