Gluvit Waterproof Epoxy Sealer Protecting your hulls and decks has never been easier with Gluvit Waterproof Epoxy Sealer. Made to protect fiberglass wood, aluminum, and steel it provides an extra barrier and protective coating. Wear and tear on boats can cause cracks, pinholes, and leaky seams, Gluvit waterproof sealer can bridge and seal cracks and fill in minor pinholes. Its long lasting life allows it to penetrate into cracks for added strength. The sealer helps to minimize corrosion and wate