DuraSeal 16″ Pre-Treat Pad DuraSeal® Pre-Treat is specifically formulated to optimize the adhesion of DuraSeal® X-TERRA® Floor Finish to polyurethane finished hardwood floors and prefinished floors treated with aluminum oxide and other prefinished coatings. It is also an excellent choice for use on Sport Floor finishes. Used in conjunction with the DuraSeal® Pre-Treat Pad, these two products will sufficiently clean and abrade the floor to ensure satisfactory results when refinishing these types of floors. This product is ready to use, do not dilute. Note: Do not use this product on any floor that has been waxed or oiled. If unsure, test a small area of the floor with a rag dampened with mineral spirits. If a wax residue appears as a shiny glaze on the rag, do not recoat with finish. DuraSeal® does not guarantee adhesion of finish over wax or oil residues.