Castrol Braycote 1728 is a smooth, buttery, translucent NLGI #2 grease. It is based upon a low molecular weight perfluorinated polyether oil and a tetrafluoroethylene gelling agent. Braycote 1728 is nonflammable, chemically, chemically inert to strong acids and alkalies, and is oxidizer compatible. Castrol Fluoroclean™ X100 and Castrol Fluoroclean™ HE can be used to remove this lubricant. Refer to the data sheets for Fluoroclean™ X100 and Fluoroclean™ HE for information regarding these products.
Braycote 1728 is recommended for those light duty applications in which lubricant compatibility with aggressive chemicals and oxidants in direct or indirect contact is of primary concern. Braycote 1728 is stable when exposed to both concentrated acids and bases, and oxygen. Perfluorinated greases, in general, exhibit excellent shelf lives due to their intrinsic inertness.
-40°F to 350°F (-40°C to 177°C)
Braycote 1728 is compatible, under normal operating conditions with conventional metals, plastics, and elastomers. Braycote 1728 may be adversely affected by Lewis Acids such as aluminum chloride, at elevated temperatures. Newly exposed rubbing surfaces of aluminum, magnesium, or titanium may react with Braycote 1728 under certain conditions. Such systems should be thoroughly evaluated. Surfaces must be well cleaned of organic rust inhibitors prior to grease application to insure lubrication.
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.
Braycote 1728 is available 15 pound pails and 1.75 lb cartridges.
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