What technical specifications and performance class define Duraseal asphalt emulsion sealers?

For contractor-grade “Duraseal” type sealers, the most useful technical definition is performance class rather than brand claims. Look for specified minimum solids, viscosity range for spray or squeegee, cure time and tracking resistance, and residue properties such as softening behavior and flexibility. Professional specs also include coverage rate targets tied to wet mil thickness and limits on sand loading, plus compatibility with additives or polymers. If the datasheet lacks residue testing, durability and UV claims should be treated as unverified until field tested.