Norton 662611-33339 Waterproof Paper Disc 12in 320 Grit

Product Description

The NORTON 662611-33339 is a 12-inch waterproof paper sanding disc designed for wet and dry finishing applications across a range of flat and contoured surfaces. Built to T461 type specification, this disc uses silicon carbide or aluminum oxide abrasive on a waterproof paper backing that resists moisture, loading, and tearing during use. At 320 grit, it is suited for fine finish sanding, denibbing between coats, and surface prep work where a smooth, consistent scratch pattern is required. It is sold individually and packaged in quantities of 50 discs, making it a practical choice for shop stocking and production line use.

This disc is used in metal fabrication, woodworking, auto body refinishing, and general surface preparation where water or lubricant is applied during sanding. The no-hole design makes it compatible with solid backup pads on orbital and disc sanders, as well as hand sanding blocks. It suits both production environments and bench work where finish quality and surface consistency are priorities. Licensed tradespeople and skilled shop technicians are the primary installers and end users of this consumable abrasive product.

Key Features

• 320 grit for fine finish sanding and between-coat denibbing
• T461 waterproof paper backing rated for wet and dry sanding
• 12-inch diameter with no hole for use with solid backup pads
• Resists moisture and loading during extended wet sanding use
• Packaged in quantities of 50 discs for shop stocking convenience

Compatibility

Designed for use with 12-inch solid backup pads on standard disc sanders and orbital finishing equipment that accept no-hole disc configurations.

Installation Notes

Mount the disc onto a clean, flat 12-inch backup pad and ensure full contact across the surface before use. When wet sanding, use an appropriate lubricant or water and keep the workpiece and disc consistently wet to prevent loading and heat buildup. Inspect the disc for tears or deterioration before each use and replace if backing integrity is compromised. Always wear appropriate PPE including eye protection and dust or mist respiratory protection as required by the work environment.

Technical Specifications

• Disc Diameter: 12 inches
• Hole Configuration: No Hole
• Grit: 320
• Type: T461
• Packaging Quantity: 50 discs
• Unit of Measure: Each
• Minimum Order Quantity: 100

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 662611-33339