Product Description
Lubricating Oil, General Purpose, Preservative
Water Displacing – Low Temperature
Brayco 300 is designed for the lubrication and preservation of small arms, automatic weapons, and fuse
mechanism applications, especially where a low temperature, water displacing oil is desired. It may be used to
protect unpainted metal surfaces from the effects of indoor storage for periods of three to six months, after which it
remains readily removable. Brayco 300 will also protect magnesium and aluminum against corrosion at low and
medium temperatures (-70°F to 300°F). QUALIFIED TO MIL-PRF-32033A
Castrol Brayco 300
Lubricating Oil, General Purpose, Preservative
Water Displacing – Low Temperature
Description
Castrol Brayco™ 300 is a blend of highly refined petroleum oil with suitable additives which provide corrosion
prevention, oxidation resistance, and freedom from galvanic corrosion in brass-steel bimetallic systems. The
viscosity is similar to a light machine oil. Brayco 300 is a water displacing oil for general purpose applications at
low and medium temperatures (-70ºF to 300ºF).
Application
Brayco 300 is designed for the lubrication and preservation of small arms, automatic weapons, and fuse
mechanism applications, especially where a low temperature, water displacing oil is desired. It may be used to
protect unpainted metal surfaces from the effects of indoor storage for periods of three to six months, after which it
remains readily removable. Brayco 300 will also protect magnesium and aluminum against corrosion at low and
medium temperatures (-70°F to 300°F).
Brayco 300 may be applied by brush, dip, swab, spray, or squirt can. Depending on the method of application and
surface geometries, Brayco 300 will cover 1,000 to 3,000 square feet per gallon. For water displacement, it may
be applied by these same methods. Displaced water should be removed from dip tanks at suitable intervals.
