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The 3M 7100098196 is a pressure-sensitive adhesive (PSA) abrasive disc designed for use with disc sanders in finishing and surface preparation applications. Part of the 3M 321U series, this disc features a ceramic aluminum oxide abrasive grain on a C-weight paper backing, delivering consistent cut and durability across a range of sanding tasks. At 600 grit, it falls in the super fine grade range, making it well suited for fine material removal, surface smoothing, and prep work before finishing coats. Each package contains 100 discs at a diameter of 6 inches. No vacuum holes are included on these discs.
These PSA discs are intended for use with disc sanders that accept 6-inch PSA-mount abrasives. The super fine 600 grit rating makes them appropriate for finish sanding operations on wood, composites, and similar materials in both shop and light industrial environments. Typical users include cabinet makers, finishing carpenters, and production shop technicians who require a consistent, high-count supply of fine-grit abrasive discs. The blue disc color aids in quick identification on the shop floor.
Compatible with disc sanders that accept 6-inch PSA-mount abrasive discs. Designed for use with machines in the disc sander category. No vacuum hole pattern; verify platen type before use.
Ensure the disc sander platen surface is clean and free of adhesive residue before applying a new disc. Align the disc flat against the platen and press firmly from the center outward to achieve full adhesive contact and avoid air pockets. Operate sanding equipment according to the tool manufacturer's rated speed for 6-inch PSA discs. Inspect discs for wear or loading before each use and replace as needed to maintain consistent finish quality.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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