Seal Lock® Plus is an alcohol-based flat coating that stops bleeding
on plaster, wood, metal and masonry. It is ideal as a replacement
for pigmented shellac, although it does not contain shellac. Seal
Lock® Plus may be used as a primer for porous wallboard,
plasterboard, drywall and plywood; as a sealer for “hot plaster”,
patches and spots, asphalt coatings, plaster walls, wood, multicolor
finishes, and metal; and as a stain blocker for creosote, asphalt,
crayons, ink, redwood and cedar. Applicable for interior or exterior
use. For exterior use, spot prime only. Seal Lock® Plus is also
suitable for use as a vapor barrier [perm rating of 0.3].