3M 7000044731 Diamond Lapping Film Disc 8 Inch Psa

Product Description

The 3M 7000044731 is a PSA-backed diamond lapping film disc designed for precision surface finishing on extremely hard materials. Based on the 661X product line, the 668X series uses precisely graded diamond particles coated onto a durable polyester film substrate. The pressure-sensitive adhesive backing allows for fast, secure mounting to compatible disc holders and backup pads. Available in grades ranging from 0.10 to 30.0 micron, this disc delivers a consistent, repeatable finish with flat surface geometry and minimal edge rounding. It is suited for applications where tight tolerances and controlled surface finishes are required across multiple passes.

This diamond lapping disc is used in precision grinding and finishing operations on hard materials such as ceramics, carbide, glass, and optical components. The PSA backing makes it compatible with standard disc-based lapping and polishing setups. It is commonly used in production environments where throughput and finish consistency are critical. The disc measures 8 inches in diameter and is sold individually, with a minimum order quantity of 25 units.

Key Features

• PSA backing for secure, fast mounting to disc holders and backup pads
• Precisely graded diamond abrasive particles on a polyester film substrate
• Delivers flat surfaces with low edge rounding for tight-tolerance work
• Consistent, repeatable finish across multiple uses
• Long abrasive life reduces frequency of disc changes and improves throughput
• Available in grades from 0.10 to 30.0 micron for a wide range of finishing requirements

Compatibility

Designed for use with standard disc-based lapping and polishing equipment that accepts 8-inch PSA-backed abrasive discs.

Installation Notes

This disc is installed by pressing the PSA backing firmly onto a clean, dry backup pad or disc holder. Ensure the mounting surface is free of debris or residue before application to achieve full adhesion and prevent disc movement during use. Follow equipment manufacturer guidelines for disc speed and load pressure. Discs should be handled carefully to avoid contaminating the abrasive surface.

Technical Specifications

• Disc Diameter: 8 inches
• Backing Type: Pressure-Sensitive Adhesive (PSA)
• Abrasive Type: Diamond
• Substrate: Polyester film
• Abrasive Grade Range: 0.10 to 30.0 micron
• Weight: 0.02 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 25

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044731