SPI Supplies

Braycote® Micronic 803 Perfluoroether Vacuum Grease

Additional technical information

Description:
Braycote® 803 is a smooth, buttery, translucent-white NLGI #2 grease, based on perfluoropolyether oil (Brayco® 812) and thickened with a polytetrafluoroethylene gelling agent. Braycote Micronic 803 is thermally stable in air, vacuum, strong acids, and oxidizers.

Temperature Range:
Below -63° C to above 232° C (below -80° F to above 499° F). Lower temperature operation below -63° C (-80° F) is possible when adequate torque is available.

Uses:
Braycote® Micronic 803 was developed for those applications in which long term exposure to high temperatures, or hard vacuum is expected. Braycote® Micronic 803 is fully compatible for use in both direct and indirect contact with liquid and gaseous oxygen (LOX/GOX). Perfluorinated greases, in general, exhibit excellent shelf lives due to their intrinsic inertness.

Limitations:
Braycote® Micronic 803 is compatible with all commonly used construction materials including metals, plastics, and elastomers. It may be adversely affected by Lewis Acids such as aluminum chloride, at elevated temperatures. Newly exposed rubbing surfaces of aluminum, magnesium or titanium alloys at elevated temperatures may react with Braycote® Micronic 803 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.

Packaging:
Braycote® Micronic 803 is available from SPI Supplies in a variety of package sizes, ranging from 10 grams up to 1 pound plastic jars and 15 pound plastic pails.

Other information:
SPI Supplies offers as standard product the Braycote® Micronic 803. Essentially the same product is available, for a slightly lower price without the final filtration that the product undergoes to become "Micronic" 803. It is also available with a "rust preventative" additive, and is should be requested as Braycote® 803RP.

Braycote® 803/803 Micronic

Typical Properties

Test methods           Description                           Result
___________________________________________________________________________
D 1403        Penetration @ 25° C (77° F), mm-1 Unworked
 
286                                                     Worked, 60 strokes

D 2595             Evaporation Loss, % wt.
                   22 hrs @ 204° C (400° F)                  0.33

FTM 321            Oil Separation, % wt.
                   30 hrs @ 204° C (400° F)                  8.93

FTM 5309           Copper Strip Corrosion
                   22 hrs @ 99° C (210° F)                   1b

D2266              Four-Ball Wear-Test, AWSD, mm
                   1200 rpm, 40 kgf, 1 hr, 75° C (167° F)    0.70

D2596              Four-Ball Extreme-Pressure Test
                   No weld point, kgf                      800

D 3336             High Temperature Bearing Performance
                   204° C (400° F), 10,000 rpm, hrs          2000+

D 1478             Low Temperature Torque, g.cm
                   @ -54° C (-65° F)                         Starting

1885               Running, 1 hr                             

1040               @ -62° C (-80° F)                         Starting

2220               Running, 1 hr                             

1295

E 595              Vacuum Stability
                   125° C (257° F), 24 hrs, 10-6 torr         0.04
                    Total Weight Loss, %                     0.01

D 2512             LOX Impact Sensitivity
                   1100 mm, 20 drops                         Pass

Base oil information:

Density              Pounds per Gallon @16° C (60° F)       15.709

D 445                    Kinematic Viscosity, cSt
                            @ 40° C (104° F)                 187
                            @100° C (212° F)                  33

Knudsen                  Vapor Pressure, torr
                            @ 20° C (68° F)            < 1 x 10-10
                            @100° C (212° F)           < 1 x 10-7

D 97                     Pour Point, ° C (° F)         < -60 (-75)

               Information specific for Braycote Micronic 803

FTM 3005.4     Solid Particle Contamination per cc of grease
                               -75µm                           319
                                75+ µm                           0

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Monday January 05, 2009
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