It's Knot Shellac Sealer (16oz Pint)($25.99Value)

Description

Clear, Water Based Sealer Blocks Tannins and Stains Preventing Bleed Through Penetrates and Seals Wood Grain Fibers Non Yellowing, Brushable and Sprayable For Use on Bare Wood, Under Paints and Top Coats & Over Stains Clear Stain and Tannin Blocking Sealer. Penetrates & Seals Wood Grain Fibers creating a waterproof barrier. Can be used on bare wood as well as under paints and top coats and over stains. All the benefits of Shellac but it's "knot". This is an easy to use water based formula that can be brushed or sprayed and will not yellow or amber over time. Use 2 or more coats.