Dow Corning® 704 is a single-component fluid for high vacuums of 10 -6 to 10 -8 torr (untrapped) and 10 -10 to 10 -11 torr (trapped). It performs well in tough, rugged applications and offers quick pumpdown, even after exposure to air at operating temperatures. Dow Corning 705 Diffusion Pump Fluid
1 缩短调节运行时间：单一组分硅油比用多组分的有机油达到最大能力需要的时间短的多。
2 快速抽空：扩散泵用硅油工作前级压力可比使用有机油高20-300%。为使泵工作区域高压端气体通过能力更高，加热输入可以增加20-30%。
3 极小的回流：DOW CORNING单一组分硅油的蒸汽压力是很低的，以至对于许多应用阱或现存的阱致冷是不需要的。
4 较长的服务寿命：硅油的热和化学稳定性允许长久的运行而不被恶化和污染
Dow Corning 704 Diffusion Pump Fluid is a single-component fluid for high vacuums of 10-6 to 10-8 torr (untrapped) and 10-10 to 10-11 torr (trapped). It performs well in tough, rugged appli-cations and offers quick pumpdown, even after exposure to air at operating temperatures. Dow Corning 705 Diffusion Pump Fluid is a colorless to straw ...。
Dow Corning 704 Diffusion Pump Fluid is a single-component fluid for high vacuums of 10-6 to 10-8 torr (untrapped) and 10-10 to 10-11 torr (trapped). It performs well in tough, rugged appli-cations and offers quick pumpdown, even after exposure to air at operating temperatures. Dow Corning 705 Diffusion Pump Fluid is a colorless to straw ...。
5 清洗系统维修需求较少：在隔板温度硅油的蒸汽压力低导致迁移率。喷口和油加热器表面保持清洁，硅油在工作条件下有效地呈现出不衰变或不分解。
6 较快的循环，减少停机时间，更换油的需求少：在工作温度下暴露到大气后，硅油的恢复速度比有机油快许多时间。由于DOW CORNING硅油突出的抗氧化性、抗水解性，允许在泵没有时解除真空，周期间的时间节省。
性能
7 辐射阻抗：由于DOW CORNING扩散泵油的苯含量高，显示了很好的对于γ射线的辐射阻抗。DOW CORNING 704扩散泵油需约1800兆拉德的辐射使原来的粘度加倍