Merit Abrasives 08834172120 Psa Disc 9 in 80 Grit

Product Description

The MERIT ABRASIVES 08834172120 is a 9-inch PSA (pressure-sensitive adhesive) abrasive disc designed for grinding, blending, and surface prep work on metal, wood, and composite materials. It uses aluminum oxide as the abrasive material, rated at 80 grit for medium-cut stock removal. The disc features a flexible cloth backing that conforms to irregular surfaces and withstands the heat and stress of sustained sanding. At 0.5 pounds per disc, it is a single-unit item suited for production and finishing shops, fabricators, and trade contractors who require consistent cut rate and disc longevity on orbital and disc sanders.

This PSA disc is used across metalworking, woodworking, and general fabrication environments. The pressure-sensitive adhesive mount allows quick attachment to compatible backup pads without mechanical fasteners, reducing downtime during disc changes. The 80-grit aluminum oxide construction handles weld blending, paint stripping, and rough stock removal in both residential and light commercial applications. It is well-suited for use on stationary disc sanders, portable right-angle sanders with PSA backup pads, and bench-mounted finishing equipment.

Key Features

• 9-inch diameter fits standard PSA backup pads on disc and orbital sanders
• 80-grit aluminum oxide delivers consistent medium-cut stock removal
• Flexible cloth backing conforms to contoured and irregular work surfaces
• Pressure-sensitive adhesive mount enables fast, tool-free disc changes
• No vacuum holes — suited for solid backup pads without dust extraction ports
• Black disc color aids contrast for wear and loading inspection

Compatibility

Designed as a direct-mount PSA replacement disc for 9-inch backup pads used on standard disc sanders and right-angle grinders equipped with PSA-style platens.

Installation Notes

Ensure the backup pad surface is clean and free of adhesive residue before mounting a new disc. Align the disc carefully before pressing down, as the PSA bond seats quickly and repositioning can degrade adhesion. Power down and disconnect the sander before changing discs. Dispose of worn discs in accordance with local shop waste guidelines.