JIT Silicone diffusion pump oils – #702, #704, and #705 – are durable fluids designed for a variety of high vacuum applications and for fast pumping large volumes of gas. They are drop-in replacements to – and completely miscible with – the DOW CORNING® DC-702, 704, and 705 silicone fluids, respectively. #702, #704, and #705 silicone diffusion pump oils offer equal or better performance compared to the equivalent DOW CORNING products.
702 is designed for rapid pumping of large volumes of gas and has the important advantages of thermal stability and oxidation resistance. This silicone-based fluid is resistant to air at operating temperatures, the pumps require no cooling between cycles.
704 is a silicone diffusion pump oil with low vapor pressure and great thermal stability, making it desirable in processes such as vacuum coating, metallurgical work, and various other applications. It offers superior vapor pressure capabilities and quick pump down cycles.
705, with a higher viscosity than the other fluids, is designed to produce an ultra-high and ultra clean vacuum. With the use of traps, 705 is capable of attaining a pressure of 10-11 torr, and without a trap 10-9 torr.