3M 7100282086 Psa Disc 5 in 220 Grit Ceramic

Product Description

The 3M 7100282086 is a pressure-sensitive adhesive (PSA) abrasive disc designed for precision surface finishing across a wide range of materials. Part of the 3M 900DZ Series, this 5-inch disc features a ceramic abrasive grain rated at 220 grit (Very Fine), delivered on a J-weight cloth backing for flexibility and durability under load. The PSA mount allows fast, tool-free attachment to compatible backup pads. With a maximum rated speed of 12,000 RPM, it suits both handheld and stationary orbital finishing applications. Licensed tradespeople and skilled fabricators rely on this disc to achieve extra-smooth finishes where surface quality matters.

This disc is suited for finish sanding and surface prep work on aluminum, carbon steel, mild steel, composite, fiberglass, gelcoat, hardwood, softwood, plastic, solid surface materials, paint, primer, and topcoat. It performs well in bodywork, fabrication, woodworking, and finishing environments where a consistent, fine scratch pattern is required before final coating or inspection. The cloth backing provides conformability on contoured or flat surfaces alike.

Key Features

• 220 grit (Very Fine) ceramic abrasive for extra-smooth finish results
• J-weight cloth backing offers flexibility and durability under pressure
• Pressure-sensitive adhesive (PSA) mount for fast, secure pad attachment
• Rated to 12,000 RPM for use with standard orbital and right-angle tools
• No vacuum holes — suited for solid backup pads without port configurations
• Purple disc color for easy grit identification in multi-disc setups

Compatibility

Designed for use with 5-inch PSA backup pads on orbital sanders, right-angle grinders, and finishing tools rated for PSA-style discs. Compatible materials include aluminum, carbon steel, mild steel, composite, fiberglass, gelcoat, hardwood, softwood, plastic, solid surface, paint, primer, and topcoat.

Installation Notes

Installation is performed by pressing the PSA-backed disc firmly onto a clean, dry 5-inch backup pad surface, ensuring full contact to prevent edge lift during operation. Confirm the tool and backup pad are rated for at least 12,000 RPM before use. Inspect the disc for tears or delamination before mounting, and never exceed the rated RPM. Worn or contaminated backup pad surfaces reduce adhesion — clean or replace the pad as needed before attaching a fresh disc.