3M 7100031777 Aluminum Oxide Lapping Film Disc 5 in

Product Description

The 3M 7100031777 is a 5-inch diameter aluminum oxide lapping film disc designed for precision surface finishing across a wide range of substrates. It features tightly graded aluminum oxide particles coated onto a 3-mil polyester film backing, which supports consistent cut rates, uniform finishes, and repeatable results over the life of the disc. This disc is suited for applications where controlled, fine-surface conditioning is required, including fiber optic connectors, electronic components, and precision mechanical parts. Technicians and tradespeople who need reliable, grade-consistent abrasive media rely on this format for repeatable outcomes.

This disc is used in light industrial, electronics, and precision-finishing environments where surface quality is critical. The 5-inch disc format is compatible with standard lapping and finishing setups. Available grades span from 0.30 micron to 30.0 micron, covering fine polishing through moderate stock removal. The disc format suits both bench-top and handheld finishing applications where flat, uniform results are needed on metal, ceramic, glass, or composite substrates.

Key Features

• Tight aluminum oxide particle distribution for consistent finish quality
• 3-mil polyester film backing provides dimensional stability during use
• Consistent cut rate and abrasive life across the disc surface
• Produces uniform finishes on metal, ceramic, glass, and composite substrates
• Available in 0.30, 3.0, 5.0, 9.0, 12.0, and 30.0 micron grades
• Available in disc, sheet, and roll formats

Compatibility

Designed as an OEM-style lapping disc replacement for standard 5-inch lapping and surface-finishing setups used in precision mechanical, optical, and electronics finishing applications.

Installation Notes

This disc is installed and used by precision finishing technicians and trades professionals working on sensitive components. Ensure the work surface and backing plate are clean and free of debris before mounting the disc to avoid uneven wear or substrate damage. Follow applicable workplace safety guidelines for abrasive products, including eye protection and dust control. Do not exceed the abrasive media's rated operating conditions for speed or pressure.

Technical Specifications

• Diameter: 5 inches
• Abrasive Material: Aluminum Oxide
• Backing: 3-mil polyester film
• Available Micron Grades: 0.30, 3.0, 5.0, 9.0, 12.0, 30.0 micron
• Weight: 2.13 pounds
• Package Length: 7.71 inches
• Package Width: 6.88 inches
• Package Height: 4.7 inches
• Unit of Measure: Each
• UPC: 051141416491

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100031777