Norton has chosen to take this out of the Norton brand, and is now labeling it under the Merit brand. It is still the same great paper, just in a different package!
Merit offers more durability over an uncoated abrasive while resisting chip loading. This sheet is used for paint stripping, sanding and finishing on composites and fiberglass, and all-purpose bare wood sanding.
Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. An open coat covers about 50 to 70 percent of the coated surface with abrasive, for greater flexibility and resistance to clogging than a closed coat, which has 100 percent grain coverage. An open coat allows for longer usage time by clogging less, while a closed coat offers a finer surface finish than an equivalent open-coat abrasive. This sheet is open-coat. The stearate coating offers more durability over an uncoated abrasive while resisting chip loading. Stearated abrasives are non-pigmented to eliminate color transfer to the work surface. These sheets are typically used on portable sheet sanders and portable file sheet machines.
Abrasives are used for a variety of applications from shaping a part to fine finishing, depending on the grit size. Low grit numbers like 40 are coarse and are used for removing excess material and shaping a part. High grit numbers like 400 are fine and help to create a smooth surface finish.
Norton/Merit Abrasives manufactures a wide variety of sanding, grinding, and polishing abrasives, and has been located in the United States since 1885. In 1990, Saint-Gobain purchased Norton/Merit, keeping its manufacturing facilities and offices in the same location. Norton/Merit has been recognized as a Global 100 Sustainable Company, as well as earning ISO 9000 and 14001 certification for quality and environmental management standards.