3M 7000118882 Psa Abrasive Disc 3 in 100 Grit Aluminum Oxide

Product Description

The 3M 7000118882 is a pressure-sensitive adhesive (PSA) abrasive disc designed for grinding, blending, and finishing applications in industrial and trade settings. Built on an X-weighted cloth backing, this disc delivers the rigidity needed for aggressive stock removal while the aluminum oxide abrasive provides consistent cutting action throughout its service life. At 100 grit, it falls into the fine grade range, making it well suited for intermediate finishing passes where surface refinement matters. The flexible construction allows the disc to conform to contoured workpieces without losing contact. Machinists, fabricators, and surface prep technicians are the primary users of this disc type.

This disc is intended for use on bench top motors, disc sanders, and random orbital sanders in both shop and field environments. The PSA mount allows for fast disc changes without hardware, reducing downtime during high-volume surface preparation work. The 3-inch diameter fits compact sanding pads common in metal fabrication, woodworking, and composite finishing applications. No vacuum holes are included, so this disc is appropriate for solid backing pads rather than dust-collection-integrated systems. The maroon color coding identifies the disc within the 3M 348D series for easy shop inventory management.

Key Features

• Aluminum oxide abrasive provides durable, consistent cutting at 100 grit (fine grade)
• X-weighted cloth backing resists tearing under aggressive feed pressure
• Pressure-sensitive adhesive mount enables tool-free disc changes
• Flexible construction conforms to contoured and irregular workpiece surfaces
• Compatible with bench top motors, disc sanders, and random orbital sanders
• No vacuum holes — suitable for solid backing pad configurations

Compatibility

Compatible with bench top motors, disc sanders, and random orbital sanders that accept 3-inch PSA-mount abrasive discs. Solid backing pads without dust ports are required due to the absence of vacuum holes.

Installation Notes

PSA discs are installed by peeling the liner and pressing firmly onto a clean, dry backing pad — ensure the pad surface is free of debris or adhesive residue from previous discs to achieve full bond. Power down the sander and disconnect it from its power source before changing discs. Inspect the backing pad for wear or damage before mounting a new disc, as a compromised pad surface reduces adhesion and can cause the disc to separate during operation. Dispose of used discs in accordance with local shop waste guidelines.