Dow Corning® 510, 550 and 710 Fluids have radiation resistance of approximately 1.7 x 108 rads. Dow Corning 510 Fluid is available in a viscosity range of 50 to 30,000 cs, Dow Corning 550 Fluid has a viscosity of 125 cs and Dow Corning 710 Fluid has a viscosity of 500 cs. Dow Corning 550 and 710 Fluids can be blended to provide any viscosity between 125 and 500 cs.