Silicone is a synthetic product used in damping fluid, sealants, etc... while silicon is the element Si
SiO2 or silicon dioxide is sand.
Silicone is the stuff used in NuFinish, Liquid Glass, Finish 2001, RTV, etc... to give it that water beading power.
Wiper blades like Tripledge's blades use Jamak Silicone rubber. They used to use Dow Corning silicone but I believe there were problems with that material.
I've tested these blades to -5F and they work as if the temperature were 60F+.... they take snow, ice, and freezing temperatures w/o any problems.
Natural rubber can't go below 32F w/o running into problems.