Orange Seal tubeless tire sealant has an updated formula that they’re saying is the only natural latex formula that’s non-corrosive.
They say normal latex sealants use a cutting agent to thin it into a usable liquid, but that cutting agent is often corrosive and can hurt bare alloy rims like those in Shimano Dura-Ace, Fulcrum, etc.
It’s shipping now and replaces the original formula without losing any if the sealing properties. It still uses varied size nano particles of metal that help coagulate the sealant to cover larger holes.
An 8oz injector bottle is $15, the 8oz refill is $13 and the 4oz is $10/$7 with the same options. There’s also a 32oz shop bottle that’s only available to shops.