Diffusion Pump Fluid

Diffusion pump fluids are designed for high vacuum and for fast pumping of large volumes of gas or vapour in production operations. Dow Corning 702, 704, and 705 are thermally stable, oxidation resistant, and chemically inert silicone vacuum fluids that offer quick pump down and longer fluid life. They also allow diffusion pumps to operate at higher fore pressures than those using hydrocarbon or synthetic fluids, resulting in faster pumping and a more efficient vacuum system. Dow Corning diffusion pump fluid can attain low vapour pressures, thus reducing backstreaming and eliminating the use of traps for many applications.

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