Engineering solutions in the field of
lubricants and sealants


100% active, fluorosilicone polymer.





Resists oxidation, harsh chemicals, fuels, wide temperature ranges
Available in 300, 1000 and 10,000 cs
Service temperature range of -40 to 204°C (-40 to 400°F); see caution statement under “Toxicity”


DOWSIL FS-1265 Fluid is typically used as a lubricating oil in vacuum pumps handling reactive gases; in high- and low-temperature bearings; in bearings subjected to washing by fuels or solvents; in vapor cycle engines, such as those handling steam or Freon®1; and as a base fluid for thickening greases.

Mechanical Vacuum Pumps

Besides giving excellent lubricity, DOWSIL FS-1265 Fluid resists breakdown and sludge formation caused by trace amounts of reactive chemicals such as acids, bases and halogens. This oil’s stability at elevated temperatures and good film strength protect vacuum pumps from chemical corrosion or wear. Because this fluid is insoluble in water, any moisture entering the pump system will be purged without affecting the pumping characteristics or causing corrosion.

Porous Bronze Bearings

DOWSIL FS-1265 Fluid is used to lubricate small, lightly loaded porous bronze bearings. Besides excellent lubricity, it provides superior wear life, stability from -40 to 204°C (-40 to 400°F) and resists degradation by corrosive chemicals.