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Braycote® 602EF Vacuum Grease

Typical properties


Description
Castrol Braycote® 602 EF is a smooth, buttery, gray colored NLGI #2 grease. The base fluid (Castrol Brayco® 815Z) is a stable perfluorinated polyether with exceptional chemical resistance, extremely low volatility, and a wide temperature service range. The gelling agent is a tetrafluoroethylene telomer. This grease contains molybdenum disulfide. This product is nonflammable, does not use any chlorofluorocarbons (CFC's) during product manufacture, and is in general, chemically inert. It is an excellent lubricant, has good shear stability, and low acute toxicity. Castrol Fluoroclean™ X100 or Castrol Fluoroclean™ HE can be used to remove this lubricant. Refer to the data sheets for these products for more information.

Temperature Range
-80°C to 204°C (-112°F to 400°F)

Uses
Castrol Braycote® 602 EF is designed to operate in the presence of fuels, oxidizers, and deep space vacuums. Typical applications include ball and roller bearings, gears, electrical contracts, and as an assembly lubricant for O-rings and elastomers. This grease is highly recommended in applications where temperature extremes and/or low vacuums are routine. Perfluorinated greases, such as this product, exhibit excellent shelf life due to their intrinsic inertness.

Limitations
Castrol Braycote® 602 EF is compatible with most commonly utilized materials, plastics, and elastomers. It may be adversely affected by Lewis Acid catalysts such as aluminum chloride, at elevated temperatures. Newly exposed rubbing surfaces of aluminum, magnesium or titanium alloys may react with this product under certain conditions. Such systems should be thoroughly evaluated. Surfaces must be well cleaned of organic rust inhibitors prior to grease application to insure proper lubrication. This product is not recommended for use in applications under high vacuum with loads exceeding 100,000 psi for extended periods of time.

Packaging
Castrol Braycote® 602 EF is packaged in 2 oz (AVDP) and 4 oz disposable plastic syringes and 1 pound jars.


TEST METHOD DESCRIPTION RESULT
D 1403 Penetration, 25°C (77°F), mm-1
Unworked
Worked, 60 strokes
 268
273
D 2265 Dropping Point, ° F(° C) 460 (238)
FTM 321 Oil Separation, % wt
30 hrs @ 204°C (400°F)
Evaporation Loss %
10.8
0.12
D 2266 Four-Ball Wear-Test, AWSD @ 167° C, mm
1200 rpm, 40kgf, 1 hr
@ 75° C (167° F)
@ 204° C (400° F)

1.15
1.04
BOC Evaporative weight loss, 72 hrs at 450° F (232° C) 0.22
D 2596 Four-Ball Extreame-Pressure Weld, Kg
AWSD @ 600 Kg, mm
 800+
1.85
Spec Molybdenum Disulfide Content, (Mil-M-7866), % wt 5
D 2512
(MSFC 106)		 LOX Impact Sensitivity
1100 mm, 20 drops
 Pass
E 595
NASA
SP-R-0022A		 Vacuum Stability Test
24 hrs, 125° C (257° F), 10-6, torr
Total Weight Loss (TML), % wt
Volatile Condensable Material (VCM), % wt

0.21
0.04
D 3336 High temperature bearing performance, hours 700+
D 1476 Low temperature torque, gm-cm
@ -62° C (-80° F)
Starting
Running, 1 hr
@ -73° C (-100° F)
Starting
Running, 1hr

585
228

592
429

Base Oil Characteristics:

D 287 Specific Gravity @ 20° C (68° F)
Pounds per gallon @ 20° C (68° F)		 1.85
15.4
D 445 Kinematic Viscosity, cSt
@ 99° C (210° F)
@ 38° C (100° F)
@ -54° C (-65° F)
 45
148
11,500
D 2270 Viscosity Index 350
D 97 Pour Point, ° C (° F) -72 (-100)
Knudsen Vapor Pressure, torr
@ 20° C (68° F)
@ 100° C (212° F)
@ 200° C (392° F)
4 x 1013
2 x 10-9
2 x 10-4

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Friday November 21, 2008
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