SealBack™ is a low VOC clear acrylic sealer that is formulated with a proprietary blend of nano-particles. Each gallon of this remarkable product contains trillions of nano-particles that protect surfaces from the sun, rain, snow, and dirt buildup.
proprietary blend of nanoparticles <40nm
"A nanometer is one billionth of a meter. A nano-particle is classified as any particle under 40 nanometers. A 40nm particle is 1,000 times smaller than a human hair. SealBack™ is a low VOC clear acrylic sealer that contains trillions of nano-particles per gallon. The blend of particles come together to provide excellent protection against UV, water, abrasion, and dirt."
Safety Data Sheet lists: "An emulsion of polymer and metallic microparticles stabilized in an aqueous medium"