3M 7100046309 Psa Disc 80 Grit 6 Inches Ceramic 100 Pack

Product Description

The 3M 7100046309 is a pressure-sensitive adhesive (PSA) abrasive disc from the 3M 775L series, designed for stock removal and surface preparation in professional finishing applications. The disc measures 6 inches in diameter and cuts with 80-grit ceramic abrasive, placing it in the medium grade range. A flexible film backing allows the disc to conform to contoured workpiece surfaces, maintaining consistent contact and cutting action. These discs ship in packs of 100 and are intended for use by metalworking professionals, fabricators, and finishing technicians who require reliable, repeatable abrasive performance in high-volume production environments.

This disc is suited for metal, composites, and painted surfaces where aggressive stock removal or surface leveling is required prior to finer finishing passes. The PSA mount system provides a fast, tool-free disc change on compatible random orbital sanders. The purple ceramic abrasive grain is a self-sharpening material that maintains cut rate longer than conventional aluminum oxide under sustained load. No vacuum holes are included, making this version appropriate for solid backup pads without dust-extraction ports.

Key Features

• 80-grit ceramic abrasive for medium-grade stock removal and surface leveling
• 6-inch diameter with pressure-sensitive adhesive backing for tool-free mounting
• Flexible film backing conforms to contoured surfaces for consistent abrasive contact
• Self-sharpening ceramic grain sustains cut rate across extended use cycles
• No vacuum holes — compatible with solid backup pads
• Part of the 3M 775L series; sold in 100-disc packs

Compatibility

Designed for use with random orbital sanders that accept 6-inch PSA (pressure-sensitive adhesive) backup pads. No vacuum holes are present, so this disc is not suitable for hook-and-loop or perforated dust-extraction pad configurations.

Installation Notes

Installation is performed by a metalworking technician, fabricator, or finishing professional. Ensure the backup pad surface is clean and free of adhesive residue before applying each new disc; contamination reduces bond strength and can cause disc detachment under load. Do not exceed the maximum RPM rating of the backup pad when mounting these discs. Inspect the disc and pad for damage before each use and discard any disc showing tears, delamination, or loss of abrasive coverage.