Dupli-Color(R) Scratch-Seal(TM) Clear Sealer Pen permanently seals scratches and chips on your vehicles surface to prevent rust, corrosion and further flaking. Scratch-Seal combines high quality nano-technology sealers and rust preventive additives into a clear formula that is virtually invisible. Check for scratches every 30 days and seal them immediately to avoid costly repairs down the road from rust and further flaking.