686 PLUS Sealer

Performance Data: 646 PLUS and 686 PLUS performance and testing results are identical, with the exception of the gloss level adjustments detailed in point #5.

1. Side-by-Side Early Water-Resistance Testing We submersed slate samples in water after just one hour of dry time. Leading low V.O.C. retail solvent coatings failed entirely within minutes—turning soft, opaque, and requiring complete chemical stripping. Duro Shine completely rejected water entry, remaining fully transparent and undamaged.
2. Hot Tire Mark Rejection Profile Our specialized resin compounds display hot tire pick-up and mark rejection characteristics that out-perform traditional two-part floor epoxies used in automotive service bays. No standard architectural acrylic sealer approaches this tracking barrier.
3. Smooth, Streak-Free Multi-Coat Re-coating Competing low V.O.C. formulas heavily streak or leave chalky white crystals when applying necessary second coats. Duro Shine goes on perfectly level, building a glass-like finish resembling fired ceramic tile surfaces.
4. Advanced Low-Odor Human Exposure Profile Common low V.O.C. sealers on the market off-gas a heavy benzyl alcohol odor. We engineered our cross-linking binders with contemporary chemical components to preserve a low-odor workspace.
   "WARNING! HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CAUSES IRRITATION... AFFECTS CENTRAL NERVOUS SYSTEM." — Standard Benzyl Alcohol MSDS warning data (Source: J.T. Baker)
5. Depth of Color Enhancement & Wet-Look Clarity Standard market coatings use dulling wax flattening agents that leave stones looking washed out or lifeless. Duro Shine uses a proprietary clarity blend that anchors deep color enhancement alongside premium wet-look depth.
6. Self-Crosslinking Hardness Characteristics Standard acrylics lose surface hardness because they must sacrifice crucial co-solvents to meet environmental standing limits. Duro Shine uses self-crosslinking technology to secure an incredibly hard, scratch-resistant protective shell.
7. Breathable Moisture Vapor Transmission Unlike non-breathable oil lacquers which blister, yellow, and trap earth moisture beneath outdoor patios, our open-pore resin matrix easily releases underground hydrostatic vapor pressure.
8. Obsoleting Old Lacquer Constraints If your current masonry sealer warning label says "do not use where hydrostatic pressure exists," it cannot safely handle exterior walkways or earth-backed slabs. Our formula provides the performance of a lacquer with true breathable durability.

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