3M 7100145363 Hook Loop Disc 320 Grit 5 Inches Ceramic

Product Description

The 3M 7100145363 is a 5-inch hook and loop abrasive disc engineered for surface finishing with random orbital sanders. Part of the 3M 775L Series, it features a ceramic abrasive on a film and polyester backing with a non-woven construction rated Extra Fine at 320 grit. The disc runs at up to 12,000 RPM and includes 280 vacuum holes for dust extraction during use. Its purple ceramic abrasive compound delivers consistent cut rates on paint, primer, and composite surfaces. Finishing technicians, auto body professionals, and woodworkers use this disc for fine stock removal and surface prep before topcoat application.

This disc is designed for use with random orbital sanders equipped with a hook and loop (Velcro-style) pad backing system. The 280 vacuum holes align with standard dust-collection pads to maintain a cleaner work surface and reduce loading. The 320 Extra Fine grit rating makes it suitable for final-stage sanding on wood, painted metal, fiberglass, and similar substrates in both shop and field environments. It is sold individually but must be ordered in multiples of 50 units.

Key Features

• 320 grit Extra Fine ceramic abrasive for controlled, consistent surface finishing
• Non-woven construction on film and polyester backing for durability and flexibility
• Hook and loop attachment for fast disc changes on compatible orbital sanders
• 280 vacuum holes for efficient dust extraction and reduced surface loading
• Rated to 12,000 RPM for use with standard random orbital sanders
• Part of the 3M 775L Series for reliable performance across finishing applications

Compatibility

Designed for use with random orbital sanders fitted with 5-inch hook and loop backing pads that support vacuum dust extraction.

Installation Notes

Install by pressing the disc firmly onto the sander backing pad, aligning the vacuum holes with the pad ports for optimal dust collection. Ensure the sander is powered off and unplugged before changing discs. Do not exceed the rated 12,000 RPM. Inspect the backing pad regularly for wear, as a damaged pad reduces disc adhesion and can cause premature disc release during operation.