Epoxy, also known as polyepoxide, is a polymer that is used to create scratch-resistant protective coatings, fillers, and adhesive products for a variety of applications.

Epoxy resin is viscous when in liquid form, cures quickly, and adheres to a wide range of substrate materials, including wood, metal, glass, concrete, and stone. At its most basic, epoxy is composed of a liquid epoxy resin and a chemical hardener that cures the resin into hardened plastic. Once hardened, epoxy is extremely strong, dimensionally stable, and chemical-resistant.