Originally Posted by
wheelreason
I don't know, but I would suspect that they use whatever sealant they find to work best. Unlike wheels, pedals and other sponsored items that can't be really hidden or disguised easily, it would be easy to be sponsored by one brand, and use another. When I worked with the equipment of professional athletes (in another sport) this sort of thing went on all the time. I will also say that most times for the average enthusiast, using what the pros use isn't a good idea.
Agree. Pro teams will often run "non-sponsor correct" equipment with blacked out logos if they think it'll work better for them. Tires often fall into this category - teams will run whatever tire they want and just use a sharpie to black out the logos if it conflicts with one of their sponsors.
I have to assume things like chain lubes/wax and tire sealant are tested and used based on performance, regardless of who's sponsoring the team.