3M 7100138288 Bristle Disc 4.5 Inch P80 Ceramic Abrasive

Product Description

The 3M 7100138288 is a 4.5-inch ceramic abrasive bristle disc designed for aggressive surface preparation on metal and other industrial substrates. Molded, abrasive-filled flexible bristles replace wire brushes in applications requiring paint stripping, rust removal, weld burn cleanup, oxide reduction, and contaminant removal. The ceramic abrasive grain delivers consistent cutting performance throughout the full life of the disc. At P80 grit, the disc is suited for medium-to-heavy material removal while leaving a blended surface finish. HVAC fabricators, pipefitters, welders, and general maintenance technicians are the primary users of this tool.

This disc is used on angle grinders in residential, commercial, and light industrial settings. Typical applications include preparing metal surfaces before coating or welding, removing heavy oxides from pipe and structural steel, and cleaning weld zones on sheet metal. The flexible bristles conform to contoured and irregular surfaces, making the disc effective on complex part geometries where flat abrasive wheels lose contact. The open bristle spacing resists loading when removing coatings or adhesives from large surface areas.

Key Features

• Ceramic abrasive grain provides aggressive, consistent cutting from first use to last
• Flexible, molded bristles conform to contours and complex part geometries
• Effective for paint removal, rust stripping, weld burn cleanup, and oxide reduction
• Open bristle spacing resists loading during coating and adhesive removal
• Contains no wire filaments, reducing hazard from wire ejection during operation
• Requires less operator pressure than wire brushes to achieve equivalent surface preparation

Compatibility

Designed for use on 4.5-inch angle grinders used in metal surface preparation applications. No specific model compatibility data was provided by the manufacturer for this listing.

Installation Notes

This disc is installed and serviced by trade professionals including welders, pipefitters, and maintenance technicians. Before mounting, confirm the grinder is unplugged or its power source is locked out. Verify the grinder's rated RPM meets or exceeds the disc's rated speed before operation. Wear appropriate eye, face, and hand protection per applicable safety standards during use.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: P80
• Abrasive Material: Ceramic
• Color: Yellow
• Weight: 0.4 pounds
• Package Length: 9.7 inches
• Package Width: 6.4 inches
• Package Height: 5.2 inches
• UPC: 00048011245386

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138288