3M 7000120333 Abrasive Disc 120 Grit 12 Inch Wet Dry

Product Description

The 3M 7000120333 is a coated abrasive disc from the Wetordry 431Q series, designed for high-performance wet or dry sanding across a wide range of substrates. Built on a C-weight waterproof paper backing, this 12-inch disc carries a silicon carbide mineral that cuts faster than aluminum oxide and leaves a finer finish. An adhesive backing mounts directly to random orbital sanders for quick, secure attachment. Suited for both hand and machine sanding, this disc handles production finishing work where consistent scratch patterns and reduced loading matter.

This disc is used in automotive, marine, woodworking, and metal fabrication applications. It performs on paint, primer, gel coat, bare metal, and wood surfaces. The 120 grit rating makes it appropriate for intermediate material removal and surface prep before final finishing steps. Wet sanding with this disc reduces heat buildup and loading, extending usable disc life compared to dry-only abrasives.

Key Features

• Silicon carbide mineral cuts faster than aluminum oxide and produces a finer scratch pattern
• Waterproof C-weight paper backing supports both wet and dry sanding without delamination
• Adhesive backing attaches directly to random orbital sander pads
• Rated for use on paint, primer, gel coat, metal, and wood
• Wet sanding capability reduces loading and extends disc life
• 120 grit for intermediate stock removal and surface preparation

Compatibility

Designed for use with random orbital sanders accepting 12-inch adhesive-backed abrasive discs in wet or dry sanding applications.

Installation Notes

This disc is installed by trade professionals and skilled finishers in automotive, marine, and woodworking environments. Ensure the sander backing pad is clean and free of debris before attaching the adhesive disc. When sanding wet, use appropriate water containment and drainage to keep the work area safe. Do not exceed the rated 2000 RPM maximum speed.

Technical Specifications

• Grit: 120
• Disc Diameter: 12 inches
• Abrasive Mineral: Silicon Carbide
• Backing Type: C-Weight Waterproof Paper
• Attachment Type: Adhesive (PSA)
• Application: Wet or Dry
• Maximum Speed: 2000 RPM
• Package Length: 13.4 inches
• Package Width: 12.8 inches
• Package Height: 3.6 inches
• Weight: 0.08 pounds
• UPC: 00051144219193

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120333