Brayco 815z PFPE Base Oil

Brayco 815z PFPE Base Oil 2 oz
Size 2 oz
AvailabilityIn Stock
Brayco 815z PFPE Base Oil 1 Pound (453 g)
Size 1 Pound (453 g)
AvailabilityIn Stock
Brayco 815z PFPE Base Oil 10g [CofC not available]
Size 10 g
AvailabilityIn Stock

Please note: No Certification of conformance available for 05088B-BA

Brayco® 815z PFPE Base Oil

Castrol Brayco 815Z is a clear water white perfluorinated polyether based fluid. It is virtually inert, compatible with rocket propellants and oxidizers, is unaffected by ultraviolet, cosmic radiation, or high vacuums. It has an exceptionally high viscosity index and low volatility, and has little tendency to form deposits. This product is highly recommended for use in applications at low temperature extremes and in high vacuum. It exhibits excellent lubricating properties, good dielectric properties, excellent shear stability, and low toxicity. Castrol Fluoroclean™ X100 or Castrol Fluoroclean™ HE can be used to remove this lubricant. Refer to the data sheets for information regarding these products.


Brayco 815Z is essentially insoluble in current fuels and oxidizers, as well as in most organic solvents. This product is intended for use in extreme environments, and has been used successfully in many space missions and in sensitive electronic equipment. It is particularly suited for those applications where extreme vacuums and wide temperature variations are common. Perfluorinated fluids, in general, exhibit excellent shelf lives due to their intrinsic inertness.




D 287 Specific Gravity @ 16/16°C (60/60°F)
Pounds per Gallon @ 16°C (60°F)
D 445 Kinematic Viscosity, cSt
@ 99°C (210°F)
@ 38°C (100°F)
@ -40°C (-40°F)
@ -54°C (-65°F)

D 2270 Viscosity Index 350
D 97 Pour Point, °C (°F) -72 (-100)
BOC Evaporation Loss, % wt
72 hrs, 232°C (450°F)
D 664 Acid Number, mgKOH/g (end point, pH=8.2) 0.01
Knudsen Vapor Pressure, torr
@ 20°C (68°F)
@ 100°C (212°F)

4 x 10-13
2 x 10-9
E 595
Vacuum Stability Test
Total Weight Loss, % wt
Volatile Condensable Material, % wt

FTM 3009 Solid Particle Contamination Number of Particles per 100 mL
5 - 15 microns
16 - 25 microns
26 - 50 microns
51 - 100 microns
+ 100 microns


Temperature Range:

-72°C to above 204°C (-100°F to 400°F) under normal operating conditions and up to 260°C (500°F) for brief periods.


Brayco 815Z is compatible with all 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 oil application to ensure proper lubrication.

Removal of unwanted grease from grease applied surfaces:

The composition of this product is a mixture of small PTFE particles (which won't dissolve in anything) and a perfluorinated polyether liquid. We have found that Castrol® Fluoroclean™ HE is an effective solvent for the liquid component of the formulated composition and aids in the removal of the grease from places where it is no longer needed or wanted.


Brayco 815Z is packaged in 2 ounce (AVDP) bottles and in 1 pound jars. A specially prepared "Micronic" grade - ultra filtered - is available on request.