Stan's Notubes Race Sealant

 "Race Sealant." The formula had been used in various forms for years, and was reportedly shipped to race teams in black, unmarked containers. Race Sealant is based upon the exact same latex fluid as the original, but it uses a mixture of large and small irregular-shaped particles that interlock more quickly and can seal fairly large punctures instantaneously. Information on the quart sized container warns that the Race Sealant must be poured into the tire directly. It cannot be injected through the valve stem and it will clog just about everything. (So, keep your valve core at 90-degrees when inflating or deflating air pressure).

From cross country and downhill mountain biking to cyclocross, a passion for racing has been a driving force for Stan’s NoTubes’ products. Stan’s Racing Development (SRD) is a new in-house division ‘created to pursue high-performance, race-oriented products developed and tested through the rigors of professional racing at the highest levels.’

SRD products are positioned as the ‘embodiment of all of the time spent determining how to shave tenths of a second from the clock by developing the absolute best equipment that provides our athletes with an advantage on race day.’

For more than 14 years, Stan’s NoTubes adds that it has been quietly formulating a special racing version of its sealant for many of cycling’s most successful teams. Working with athletes who push themselves and their tubeless systems to the absolute limit, the company developed the proprietary sealant formula it is now marketing as Race Sealant.