Merit Abrasives 08834171181 Psa Disc 3 in 150 Grit

Product Description

The MERIT ABRASIVES 08834171181 is a pressure-sensitive adhesive (PSA) abrasive disc designed for precision sanding and surface finishing tasks. Measuring 3 inches in diameter, it features a 150-grit aluminum oxide abrasive bonded to a flexible cloth backing. The very fine grit rating makes it well-suited for finish sanding, light material removal, and surface preparation prior to coating or polishing. The PSA mount allows for fast, tool-free attachment to compatible backup pads, reducing changeover time during production or detail work. Machinists, metalworkers, woodworkers, and general fabricators commonly use this disc format.

This disc is intended for use on bench-top or handheld rotary and random-orbit sanders fitted with a 3-inch PSA backup pad. The flexible cloth backing conforms to slightly contoured surfaces, making it a practical choice for both flat stock and light contour work. It is sold as a single disc and is appropriate for both shop and field use where fine finish work is required on wood, metal, composites, or painted surfaces.

Key Features

• 150-grit aluminum oxide abrasive provides very fine cutting action for finish sanding
• Flexible cloth backing conforms to surface contours without tearing
• Pressure-sensitive adhesive backing enables fast, tool-free pad attachment
• 3-inch diameter fits standard PSA backup pads for rotary and random-orbit tools
• No vacuum holes — suited for solid backup pads without dust-extraction ports
• Black disc color for easy grit identification in mixed-grit environments

Compatibility

Designed for use with 3-inch PSA backup pads on rotary or random-orbit sanding tools. No specific model compatibility data was provided by the manufacturer for this SKU.

Installation Notes

Licensed trade professionals and shop fabricators typically mount PSA discs by pressing them firmly onto a clean, dry backup pad, ensuring full contact across the disc face to prevent edge lifting during use. Before mounting, inspect the backup pad surface for debris or residual adhesive that could cause uneven contact. Do not exceed the maximum RPM rating of the backup pad in use. Worn or glazed discs should be replaced promptly to maintain consistent finish quality and avoid heat buildup on the workpiece.