Originally Posted by tcarl

I have used Slime successfully in a 700x32 cyclocrosss tire with a butyl tube at about 65 lbs pressure, but it is messy. Much less messy, and more highly recommended to me by several shops is Flat Attack, which I've used successfully in a 700x38 touring tire at 70 lbs. and also in a Continental Gatorskin Tubular at up to 125 lbs pressure. I'm not sure if this answers any of your questions, but it lets you know what's worked for at least one person out here.