Webb Abrasives   Foam Sanding Blocks   Sandpaper   > 1727 Siawatt   > 1748 Siarexx   > 1960 Siarexx   Disks   Non-woven   Tools and Belts Webb Worldwide Medical Products   Embroidery   Screen Printing Coated (or backed) abrasives consist of three components: the backing, the binder and the abrasive grain. The backing consists of a combination of paper cloth and vulcanized fiber. The binding is a synthetic resin on both the base and the size coats, with a layer of resin in between. The two layers of abrasive coats are applied to prevent clogging and glazing of the cutting edges. Our line of sandpaper includes the following products: 1727 Siawatt Hand sanding on filler, primer, laquer and glass. 1748 Siarexx Hand and hand machine sanding on stain and sealer. 1960 Siarexx Hand and hand machine sanding on solid surfaces.