3M 7010363750 8 Inch 320 Grit Wet or Dry Abrasive Disc

Product Description

The 3M 7010363750 is a coated abrasive disc from the Wetordry 431Q series, designed for finish sanding in both wet and dry applications. It features a silicon carbide mineral bonded to a C-weight waterproof paper backing, delivering fast cutting action and a smooth surface finish. Rated at 6000 rpm, this 8-inch disc uses a pressure-sensitive adhesive (PSA) backing for quick attachment to random orbital sanders. It suits work on paint, primer, gel coat, metal, and wood substrates. Installers, body technicians, and finishing tradespeople rely on this disc where consistent scratch patterns and controlled material removal are required.

This disc is suited to automotive refinishing, marine gel coat work, metal prep, and wood finishing where alternating between wet and dry sanding passes is common. The waterproof paper backing resists softening during wet passes, reducing loading and extending disc life. At 320 grit, it is well positioned for intermediate-to-final finishing stages where surface profile control matters. It is sold individually and is compatible with 8-inch PSA backing plates on random orbital and rotary sanding tools.

Key Features

• Silicon carbide abrasive mineral cuts faster than aluminum oxide and leaves a finer finish
• C-weight waterproof paper backing supports both wet and dry sanding without delaminating
• PSA backing allows fast, secure attachment to random orbital sander backing plates
• 320 grit for intermediate-to-final finishing on paint, primer, gel coat, metal, and wood
• 6000 rpm rated for use with standard random orbital and rotary pneumatic or electric sanders
• Wet sanding reduces loading and prolongs cut life on finish coats and gel coats

Compatibility

Designed for use with 8-inch PSA backing plates on random orbital and rotary sanders. Compatible with paint, primer, gel coat, metal, and wood substrates for wet or dry sanding applications.

Installation Notes

Confirm the sander backing plate is clean and free of debris before attaching the disc to ensure full adhesive contact. Do not exceed the rated speed of 6000 rpm. Inspect the disc before each use and discard if the backing shows tears, delamination, or separation from the mineral layer. For wet applications, ensure electrical tools are rated for wet-environment use or use pneumatic equipment.

Technical Specifications

• Diameter: 8 inches
• Grit: 320
• Maximum Speed: 6000 rpm
• Abrasive Mineral: Silicon Carbide
• Backing Type: C-Weight Waterproof Paper
• Attachment Type: Pressure-Sensitive Adhesive (PSA)
• Application: Wet or Dry
• Weight: 0.02 pounds
• UOM: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010363750