3M 7100020065 Psa Abrasive Disc 240 Grit 0.75 in

Product Description

The 3M 7100020065 is a pressure-sensitive adhesive (PSA) abrasive disc designed for fine surface finishing in trade and light industrial applications. Built on an X-weight cloth backing, it delivers the rigidity needed for consistent stock removal while remaining flexible enough to follow contoured surfaces. The disc measures 0.75 inches in diameter and carries a 240 grit rating, placing it in the very fine grade range — suited for final smoothing passes, light deburring, and surface prep before coating or inspection. Aluminum oxide abrasive provides reliable cut life across metal, wood, and composite substrates. The PSA mounting system allows fast, tool-free disc changes on compatible spindles and platens.

This disc is sized for small-diameter applications commonly encountered in precision metalworking, HVAC component finishing, and plumbing fixture prep. Its 0.75-inch format fits bench-top motors and random orbital sanders configured for sub-inch tooling. The maroon disc color and very fine grit make it easy to identify in a multi-grit workflow. No vacuum holes are present, making it appropriate for solid-platen backing pads. Minimum order quantity is 50 discs; each package contains 1 disc.

Key Features

• 240 grit aluminum oxide abrasive — very fine grade for finish sanding and light material removal
• X-weight cloth backing provides durability and flexibility on curved or irregular surfaces
• PSA (pressure-sensitive adhesive) mount for quick, tool-free disc changes
• 0.75-inch diameter fits bench-top motors and compatible random orbital sanders
• No vacuum holes — designed for solid-platen backing pad use
• Flexible construction conforms to contoured workpiece geometry

Compatibility

Compatible with bench-top motors and random orbital sanders configured for 0.75-inch PSA-mount abrasive discs with solid backing pads.

Installation Notes

PSA discs are installed by aligning the disc to the backing pad and pressing firmly to activate the adhesive bond — ensure the pad face is clean and free of debris before mounting. Power down or unplug the tool before changing abrasive discs. Verify the tool spindle speed does not exceed the disc rating before operation. Worn or delaminating discs should be replaced immediately to avoid workpiece damage or operator injury.