3M 7100140894 Hookit 360L Film Disc P400 3 Inch Ao Abrasive

Product Description

The 3M 7100140894 is a Hookit 360L coated film disc designed for fine sanding and finishing applications in trade and production environments. Built on a durable film backing with an aluminum oxide abrasive grain, this 3-inch disc operates at up to 15000 RPM and delivers a close-tolerance, consistent finish on demanding substrates. The film backing resists edge tearing, making it more durable than standard A-weight paper-backed discs in high-cycle use. Open coat construction limits loading and promotes an aggressive, consistent cut rate throughout the disc's service life.

This disc is suited for sanding and finishing on plastics, gel coats, polyurethane solid surfaces, composites, and fiberglass. It is commonly used in automotive refinishing, marine hull finishing, composite fabrication, and other production finishing workflows where surface quality and disc longevity both matter. The Hookit attachment system allows fast disc changes and reuse, reducing downtime during high-volume finishing operations.

Key Features

• Aluminum oxide abrasive grain delivers fast cut rate and extended service life across a wide range of substrates
• Film backing resists edge tearing and provides greater durability compared to standard A-weight paper discs
• Open coat construction reduces loading on the disc surface for a more aggressive, consistent cut
• Hookit hook-and-loop attachment allows quick disc changes and disc reuse throughout its working life
• P400 grit designation for fine finishing and surface preparation on gel coats, composites, and solid surfaces
• Rated to 15000 RPM for compatibility with standard random orbital and disc sanders used in production settings

Compatibility

Designed for use with Hookit hook-and-loop backup pads accepting 3-inch coated abrasive discs. Suitable for sanding and finishing on composites, gel coats, fiberglass, plastics, and polyurethane solid surface materials.

Installation Notes

Installation is performed by pressing the disc firmly onto a compatible Hookit hook-and-loop backup pad. Confirm the backup pad and sander are rated for the disc diameter and maximum RPM before use. Inspect the disc and backup pad for wear or contamination before each use. Follow applicable shop safety practices including eye protection and dust management when dry sanding composites or gel coats.

Technical Specifications

• Abrasive Type: Aluminum Oxide
• Grit: P400
• Disc Diameter: 3 inches
• Backing Type: Film
• Coat Type: Open Coat
• Attachment System: Hookit Hook-and-Loop
• Maximum Speed: 15000 RPM
• Weight: 0.01 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100140894