Merit Abrasives 05539512514 Hook Loop Disc 80 Grit 4 in

Product Description

The MERIT ABRASIVES 05539512514 is a 4-inch hook-and-loop abrasive disc built for surface conditioning, blending, and finishing work. It uses an aluminum oxide abrasive in a non-woven construction rated at 80 grit, placing it in the medium-grade range. The hook-and-loop backing allows fast disc changes without tools, making it practical for high-volume grinding and finishing operations. With a maximum speed rating of 15,000 RPM, the disc handles both pneumatic and electric random-orbit sanders at common operating speeds. The flexible non-woven construction conforms to irregular surfaces, reducing the risk of gouging on contoured workpieces.

This disc is suited for metal fabrication, woodworking, auto body, and general surface prep applications where a medium-cut, conformable abrasive is needed. The red non-woven disc excels at blending weld seams, removing light rust or mill scale, and preparing surfaces for coating. It does not include vacuum holes, so it is intended for use on sanders without dust-collection port requirements. Professionals in metal finishing, body shops, and general fabrication shops will find this disc fits standard hook-and-loop orbital and angle-head sanders in common 4-inch configurations.

Key Features

• 80 grit medium grade aluminum oxide abrasive for consistent cut and finish
• Non-woven flexible construction conforms to contoured and irregular surfaces
• Hook-and-loop backing allows tool-free disc changes during operation
• 15,000 RPM maximum speed rating compatible with common pneumatic and electric orbital sanders
• No vacuum holes — fits solid-pad sanders without dust port requirements
• Red disc color for easy grit identification in a mixed-disc workflow

Compatibility

Designed as an OEM-style replacement or standard-use disc for 4-inch hook-and-loop random-orbit and orbital finishing sanders used in metal fabrication and surface prep applications.

Installation Notes

Installation is performed by pressing the hook-and-loop disc firmly onto a compatible 4-inch backing pad until fully seated. Verify the sander's maximum RPM rating does not exceed 15,000 RPM before operation. Inspect the backing pad for wear or debris that could prevent proper adhesion before attaching each disc. Follow applicable shop safety practices including eye protection and dust control when operating abrasive tools.