3M 7100138289 Scotch-brite Bristle Disc 4.5 in P120 Ceramic

Product Description

The 3M 7100138289 is a Scotch-Brite Bristle Disc designed for aggressive surface preparation across large areas. Built with ceramic abrasive grain molded directly into flexible bristles, this disc removes paint, adhesives, weld burns, rust, heavy oxides, and other surface contaminants with consistent cutting action from first use to last. At 4.5 inches in diameter and P120 grit, it is suited for blending, deburring, stripping coatings, and finishing metal surfaces. The white ceramic grain delivers reliable stock removal without wire filaments, reducing the risk of wire fragment contamination on the workpiece. Fabricators, maintenance techs, and surface prep professionals install this disc on compatible angle grinders.

This bristle disc is built for surface preparation tasks in fabrication shops, maintenance facilities, and light industrial environments. The flexible bristles conform to contours and complex part geometry, making this disc effective on flat stock as well as irregular surfaces. Common applications include weld burn removal, coating strip, rust removal, and heavy oxide cleaning on ferrous and non-ferrous metal. The P120 ceramic grit provides a balance of cut rate and finish quality appropriate for pre-treatment and pre-weld surface conditioning work.

Key Features

• Ceramic abrasive grain molded into flexible bristles for consistent cutting throughout disc life
• Conforms to contours and complex part geometry with less applied pressure than wire brushes
• Removes paint, rust, adhesives, weld burns, and heavy oxides effectively
• Bristle spacing optimized for coating removal and high-loading contaminant applications
• Contains no wire filaments, eliminating risk of wire fragment contamination
• Fast-cutting action suited for large-area surface preparation

Compatibility

Designed for use on compatible angle grinders accepting 4.5 inch diameter bristle discs. Verify arbor size and RPM rating of the grinder against disc specifications before mounting.

Installation Notes

Installation and operation should be performed by qualified trades or maintenance personnel familiar with angle grinder safety. Disconnect power from the grinder and confirm the tool is rated for the disc RPM before mounting. Wear appropriate PPE including eye and face protection. Follow ANSI B7.1 and grinder manufacturer guidelines for accessory mounting and maximum operating speed.

Technical Specifications

• Diameter: 4.5 inches
• Grit: P120
• Abrasive Material: Ceramic
• Color: White
• Package Dimensions: 9.7 x 6.4 x 5.2 inches
• Weight: 0.4 pounds
• UPC: 00048011245393

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138289