Special Formula of Crystals The quantity and size of crystals in this special formula mean that Stan’s Race Sealant can only be installed directly into the tyre. As a result of its immense sealing capabilities, the Race Sealant will clog injectors and smaller bottles almost immediately. Stans are now making their Race Sealant available to riders everywhere and is only available in 32 oz. Quiet Formulation For nearly fifteen years Stan has been quietly formulating a special racing version of Stans legendary sealant for many of cycling’s most successful teams. Working with athletes who push themselves and their tubeless systems to the absolute limit, Stans has developed a proprietary sealant formula with close to twice the amount of their standard sealing crystals plus their special “XL” crystals capable of sealing even larger punctures. Stan’s Race Sealant’s combination of large and smaller sealing crystals interlock to form a lattice work that not only seals but strengthens and reinforces the area of the puncture, allowing for an entirely new level of sealing performance. Have you seen Stans before? If you’ve walked the mechanics’ pits at any National or International level event, chances are you’ve seen them: trademark Stan’s black 32 oz bottles with no labels. Look closer and you might have seen strange symbols scrawled all over the bottles in a silver marker, letters and numbers, and formula notes by the man himself, Stan Koziatek. Please Note: The quantity and size of crystals in this special formula means that Stan’s Race Sealant can only be installed directly into the tyre. As a result of its immense sealing capabilities, Race Sealant is not compatible with injector or other valve installation methods. Race sealant should be inspected every 2-3 weeks for best performance. Be sure to rinse race sealant out of used tyres intended to be stored/reinstalled.