3M 7010308871 Wet or Dry Psa Disc 120 Grit 12 Inch

Product Description

The 3M 7010308871 is a Wetordry PSA paper abrasive disc designed for finish sanding in both wet and dry conditions. It uses silicon carbide mineral bonded to a C-weight waterproof paper backing, delivering a finer surface finish than aluminum oxide abrasives. At 12 inches in diameter and 120 grit, this disc suits final-stage material removal and surface preparation on a range of substrates. A pressure-sensitive adhesive backing allows quick, secure attachment to random orbital sanders and similar machines. Professional finishers, body shop technicians, and woodworking tradespeople use this disc where surface quality matters.

This disc is rated for use on paint, primer, gel coat, metal, and wood. The waterproof backing enables wet sanding, which reduces abrasive loading and extends disc life while improving cut rate. Dry sanding is equally supported, making it a versatile option for shops and field work where substrate types vary. The C-weight paper backing provides enough rigidity for machine sanding without sacrificing conformability for hand sanding tasks.

Key Features

• Silicon carbide mineral produces a finer finish than aluminum oxide on paint, metal, and composites
• Waterproof paper backing supports wet sanding to reduce loading and improve cut rate
• C-weight paper backing withstands both hand and machine sanding applications
• Pressure-sensitive adhesive backing attaches securely to random orbital and disc sanders
• Runs wet or dry on paint, primer, gel coat, metal, and wood

Compatibility

Designed for use with PSA-style random orbital sanders and disc sanders that accept 12-inch adhesive-backed abrasive discs.

Installation Notes

Mounting this disc requires a clean, dry PSA backup pad for proper adhesion. Ensure the sander is powered off and unplugged before changing discs. When sanding wet, control runoff to avoid contaminating adjacent surfaces or drains. Dispose of spent discs in accordance with local shop waste guidelines.

Technical Specifications

• Diameter: 12 inches
• Grit: 120
• Abrasive Mineral: Silicon Carbide
• Backing Type: C-Weight Waterproof Paper
• Attachment Type: Pressure-Sensitive Adhesive (PSA)
• Application: Wet or Dry
• Unit of Measure: Each
• Weight: 0.1 pounds
• Package Length: 12.9 inches
• Package Width: 5.6 inches
• Package Height: 13 inches

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010308871