Roberts Seam Sealer R8015A RWS183, is a solvent free adhesive with its own applicator used by carpet fitters to seal and strengthen the edges of quality carpets. Sealing the seam is a professional approach to carpet fitting. Roberts seam sealer R8015A can also be used to repair small areas of carpet and prevent fraying at the edges. Contains ultra Violet tracers so you can check the seam after.