Merit Abrasives 08834172022 Psa Disc 5 in 120 Grit

Product Description

The MERIT ABRASIVES 08834172022 is a pressure-sensitive adhesive (PSA) abrasive disc designed for surface preparation, finishing, and stock removal on a wide range of materials. The disc measures 5 inches in diameter and features 120-grit aluminum oxide abrasive for fine-grade cutting action. A flexible cloth backing allows the disc to conform to contoured and flat surfaces alike, making it a dependable choice for production sanding and finishing work. The PSA backing mounts directly to compatible hook-free backup pads, eliminating the need for mechanical fasteners and speeding up disc changes on the shop floor or job site.

This disc is suited for metalworking, woodworking, and general surface finishing applications in both shop and field environments. The aluminum oxide abrasive performs well on ferrous metals, hardwoods, composites, and painted surfaces. It is commonly used with right-angle grinders, random-orbit sanders, and rotary sanding tools equipped with PSA-compatible backup pads. The flexible cloth backing is particularly useful when working on irregular profiles or slightly curved workpieces where a rigid disc would lose contact with the surface.

Key Features

• 5-inch diameter fits standard PSA backup pads for quick, adhesive mount
• 120-grit aluminum oxide abrasive provides fine-grade cutting and finishing action
• Flexible cloth backing conforms to flat and contoured surfaces
• No vacuum holes — suitable for solid backup pad configurations
• Black disc color for easy identification in multi-grit environments
• Lightweight at 0.01 pounds per disc, minimizing added tool load

Compatibility

Designed as a PSA-style replacement disc for use with 5-inch PSA backup pads on right-angle grinders, rotary sanders, and random-orbit tools that accept pressure-sensitive adhesive abrasive discs without vacuum holes.

Installation Notes

Installation is performed by tradespeople and machinists familiar with abrasive tooling. Before mounting, ensure the backup pad surface is clean and free of adhesive residue from previous discs to maintain a secure bond. Peel the liner from the PSA backing and press the disc firmly onto the backup pad, smoothing from the center outward to eliminate air pockets. Always confirm the tool RPM rating does not exceed the disc rating before operation, and use appropriate eye and respiratory protection per applicable OSHA and ANSI standards.