Merit Abrasives 08834171183 Psa Disc 3 in 240 Grit

Product Description

The MERIT ABRASIVES 08834171183 is a 3-inch pressure-sensitive adhesive (PSA) abrasive disc designed for precision surface finishing and material removal. The disc uses aluminum oxide abrasive at 240 grit, placing it in the very fine grade range — well suited for finish sanding, light stock removal, and surface prep before coating or priming. A cloth backing provides flexibility and durability, allowing the disc to conform to contoured surfaces without tearing. No vacuum holes are included, making it compatible with solid-face backup pads. Licensed tradespeople and skilled fabricators typically use this disc in automotive body, metalworking, woodworking, and general surface finishing applications.

This PSA disc is intended for use on rotary sanders and orbital sanders equipped with a PSA-compatible backup pad. The 3-inch diameter fits compact tools commonly used in tight or contoured work areas. The flexible cloth backing makes it appropriate for both flat and irregular surfaces. At 240 grit, this disc is best applied in later stages of a sanding sequence, after coarser grits have already addressed major surface defects. It is sold individually as a single disc per package.

Key Features

• 240 grit aluminum oxide abrasive for very fine surface finishing
• Cloth backing provides flexibility and conformability on curved or irregular surfaces
• Pressure-sensitive adhesive (PSA) mount for quick, tool-free disc changes
• 3-inch diameter fits compact rotary and orbital PSA backup pads
• No vacuum holes — compatible with solid-face backup pads
• Black disc color for easy identification during use

Compatibility

Designed as an OEM-style replacement or standard consumable for use with 3-inch PSA backup pads on rotary and orbital sanders.

Installation Notes

This disc is installed by aligning the PSA backing with a clean, dry 3-inch backup pad and pressing firmly to seat the adhesive. Ensure the backup pad surface is free of dust, oil, and residue before mounting to maintain proper adhesion. Power down and disconnect the sander from its power source before changing discs. Follow all applicable workplace safety guidelines and wear appropriate eye and respiratory protection during sanding operations.