3M 7100045865 Abrasive Disc 120 Grit 5 Inches Ceramic

Product Description

The 3M 7100045865 is a 5-inch ceramic abrasive disc designed for use with random orbital sanders in light material removal, surface prep, and finish work. Part of the 3M 775L Series, it features a fine 120-grit ceramic abrasive on a flexible C-weight film backing. The ceramic abrasive grain cuts aggressively relative to its grit rating and resists glazing longer than aluminum oxide alternatives. The flexible film backing conforms to contoured surfaces, reducing swirl marks and maintaining consistent scratch patterns. At 0.01 pounds, the disc adds minimal mass to the sander pad and is suited for extended use sessions where operator fatigue is a factor.

This disc is used in surface preparation and finish sanding applications across woodworking, automotive bodywork, composites, and light metal finishing. The 120-grit fine grade makes it appropriate for intermediate to final sanding stages where a smooth, uniform scratch pattern is required before finishing or coating. It is compatible with 5-inch random orbital sanders and is sold individually. No vacuum holes are present on this disc, so it is intended for use without dust-extraction hook-up at the disc level.

Key Features

• 120-grit fine ceramic abrasive for consistent cut and extended disc life
• Flexible C-weight film backing conforms to curved and contoured work surfaces
• 5-inch diameter fits standard 5-inch random orbital sander pads
• Purple disc color aids in visual wear identification during use
• No vacuum holes — suitable for use without disc-level dust extraction
• Part of the 3M 775L Series for consistent performance across the line

Compatibility

Designed for use with 5-inch random orbital sanders. Verify sander pad type and attachment method before installation to confirm fitment.

Installation Notes

Attachment method should be confirmed before mounting — verify that the sander pad matches the disc backing style. Ensure the sander is powered off and unplugged before changing discs. Inspect the sander pad for damage or debris that could cause uneven backing contact. Follow applicable workshop safety practices including eye and respiratory protection when sanding.