SealBoss ® 1510 Water-Stop-Foam mixed with 15x Accelerator is a hydrophobic water-activated, (hydro-active), water cut-off grout and foam seal grout based on a MDI polyurethane. The resin is 100% solvent free and 100% solids. The gel-time of the product is adjustable by the mandatory adding of a certain percentage of 15x Accelerator. A phthalate free formulation (F) is available. 1510 Water-Stop-Foam is NSF/ ANSI 61 Drinking Water Contact  Approved.

Upon contact with water, SealBoss ® 1510 Water-Stop-Foam reacts to a semi flexible foam while expanding its volume 30 to 40 times. The cured material is a of a constant volume. Since water is not a component of the foam structure, the cured material is essentially not effected by water or dryness. The reacted material essentially does not shrink or swell.