Some good blacktop driveway sealers are asphalt-emulsion sealers and advanced latex-acrylic sealers, according to Popular Mechanics. Tar-emulsion sealers are a less expensive option, but they typically offer less coverage, and they are more difficult to apply as they require constant stirring.
Asphalt-emulsion sealers are one of the lower-priced products available, and they are easier to apply than tar-emulsion products because they typically do not require constant stirring, states Popular Mechanics. They work well for protecting surfaces from water and oil.
Advanced latex-acrylic sealers are another quality product for homeowners, but they typically cost more than asphalt-emulsion sealers. They do dry and cure quickly, and these types of sealers typically last longer than the lower-quality options.