3M 7100112797 Diamond Lapping Film Disc 2 Inch Psa

Product Description

The 3M 7100112797 is a 2-inch diameter PSA-backed diamond lapping film disc from the 668X series, designed for precision surface finishing on extremely hard materials. It features precisely graded diamond abrasive particles coated onto a polyester film substrate, delivering consistent, repeatable finishes across a wide range of micron grades from 0.10 to 30.0 micron. The pressure-sensitive adhesive backing allows for quick mounting to compatible backup pads or lapping fixtures. Machinists, tool and die technicians, and precision finishing specialists use this disc in applications where surface geometry and finish consistency are critical.

This disc is suited for flat surface lapping and light edge work on hard substrates including ceramics, carbide, glass, and hardened steel. The 668X series is the PSA-backed equivalent of the 661X film product and shares the same abrasive construction. Typical applications include precision optical component finishing, fiber optic connector polishing, and tight-tolerance metalworking operations where uniform material removal and low edge rounding are required. The disc format suits bench-mounted lapping machines and handheld finishing setups alike.

Key Features

• PSA backing for fast, secure mounting to lapping fixtures and backup pads
• Precisely graded diamond particles for consistent finish and repeatable results
• Available in grades from 0.10 to 30.0 micron to suit multiple finishing stages
• Flat surface geometry with low edge rounding for tight-tolerance work
• Long abrasive life reduces disc change frequency and improves throughput
• Polyester film backing provides dimensional stability under load

Compatibility

Designed as a PSA-backed diamond lapping disc compatible with standard 2-inch backup pads and lapping fixtures used in precision surface finishing operations.

Installation Notes

This disc is installed by pressing the PSA face firmly onto a clean, dry backup pad or flat lapping plate. Ensure the mounting surface is free of debris and oils before application to maintain full adhesive contact. No tools are required for mounting, but the backup pad must match the disc diameter for even abrasive contact. Discs should be stored flat and away from heat sources to preserve adhesive integrity.

Technical Specifications

• Diameter: 2 inches
• Abrasive Type: Diamond
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Film Substrate: Polyester
• Micron Grade Range: 0.10 to 30.0 micron
• Series: 668X
• Unit of Measure: Each
• Minimum Order Quantity: 50
• Weight: 0.01 pounds
• UPC: 00051111546895

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100112797