Mtbr: Have you found any negative side effects to adding glitter to your tire sealant?
Stan’s NoTubes: We’re not aware of any negative side effects other than that the glitter can be messy to install and/or to clean from rims and tires later.
Mtbr: Rather than glitter, what materials or substances in your sealant acts as a sealing particle, and how does it work?
Stan’s NoTubes: Our formulas are proprietary so we can’t disclose exactly what we use as the particulate to help seal punctures, but the basic premise is that the small particles are carried by the liquid sealant to the puncture site where they pack into the hole. Air pressure forces both the particles and liquid into the hole where all of the ingredients are compressed and trapped to form a small plug. As the liquid reacts with the air, the plug cures and becomes a permanent fix to the tire. A big part of what we’ve done is creating a sealant formula that is consistent. Sometimes that consistency is what you lose with other particles.
e*thirteen: Ground black pepper. It’s cheap and readily available like glitter, but it’s totally environmentally friendly, it washes off your bike with water, and it’s even a natural anti-microbial which prevents mold. Mold can be an issue with some of the less toxic formulas. We also use glass fibers, which are pretty common. The pepper and fibers are suspended is a solution with some acrylic resin, which together makes for a long-lasting, effective sealant with low environmental impact that’s non-corrosive to tires and bike parts.