Webb Abrasives   Foam Sanding Blocks   Sandpaper   Disks   > 1960 Siarexx   > 1749 Siafast   > NON-WOVEN Siafast   Non-woven   Tools and Belts Webb Worldwide Medical Products   Embroidery   Screen Printing Our line of sandpaper disks includes the following products: 1960 Siarexx Heavy "B" and "C" weight paper disks made from aluminum oxide with non-loading stearate. 1749 Siafast Heat treated friable aluminum oxide paper disks with non-loading stearate. Non-woven Siafast Flexible non-woven disks with compressible nylon fibers impregnated with abrasive grain.