SeamPro was formulated to be a second generation adhesive to bond well to not only traditional acrylic materials, but also to quartz, stone, ceramic and more. SeamPro is a little more than a traditional solid surfacing adhesive in this way because it sticks better to hard surfaces than all of the other competition. StoneBond took it up another notch, answering to the stone guys out there. While StoneBond also sticks to all solid surfaces, it was really designed for the hard surface industry, hence the name. StoneBond is a 4th generation adhesive the has exceptional bonding strength for even the hardest-to-bond-to materials like Stone, Quartz, Sintered Stone, Porcelain, and even Glass! StoneBond has a different thixotropic index than SeamPro. SeamPro has a traditional viscosity and thix index, while StoneBond is a non-sag, dripless adhesive, much like a knife grade adhesive in a cartridge!