Mixed phenylmethyl dimethyl cyclosiloxane. MT-702 diffusion pump fluid is a general purpose fluid designed for fast pumping of large volumes of gas. It is used to produce vacuums in the range of 10E-5 to 10E-7 torr. It is also used in vapor ejector pumps that attain vacuum of 10E-4 to 10E-5 torr.
Great for high-speed diffusion pumps
Uses include: aluminizing TV tubes, vacuum metallurgy, and heat-treat furnaces