Denis, I do not know the difference for sure. I think it is "marketing." The original (classic) CorrosionX was originally developed to control corrosion for the airplane industry and found wide use because of its success. I remember when there was only one product offered by the company. Now the company has many different branded products.

I have accidentally placed CorrosionX on Nitrile seals with no apparent adverse issue. CorrosionX states the following on their website: "Corrosion-X does not affect rubber, neoprene, monofilament, plastics, and plexiglass. All other kerosene-based products will attack and destroy rubber mounts, neoprene seals, fishing lines, and door seals. (If you do not use Corrosion-X, please do not use the cheap alternative near your rubber bushings or neoprene)."