3M 7000000303 Diamond Lapping Film 9.0 Micron 4x50ft Roll

Product Description

The 3M 7000000303 is a diamond lapping film supplied in roll form, designed for precision surface finishing on extremely hard materials. Precisely graded diamond abrasive particles are coated onto a dimensionally stable polyester film backing, delivering a consistent, repeatable finish pass after pass. This roll measures 4 inches wide by 50 feet long and carries a 9.0 micron abrasive grade, making it well suited for fine material removal and surface refinement on hard substrates such as ceramics, carbide, optical glass, and hardened metals. It is used by machinists, optical technicians, and precision tool specialists who require tight control over surface finish results.

This lapping film is applied in production and maintenance environments where conventional abrasives cannot achieve the required surface finish on hard or brittle materials. The roll format allows the user to cut or dispense the film to fit flat lapping plates, flexible backing tools, or automated lapping fixtures. The 9.0 micron grade occupies a mid-range position in the diamond lapping film spectrum, appropriate for intermediate stock removal before transitioning to finer grades. Applications include fiber optic connector polishing, cutting tool reconditioning, and precision mold and die work.

Key Features

• Precisely graded 9.0 micron diamond particles for controlled, repeatable material removal
• Polyester film backing provides dimensional stability and flexibility during use
• Roll format at 4 inches wide by 50 feet allows custom length cutting for varied fixtures
• Suitable for extremely hard materials including ceramics, carbide, and hardened metals
• Part of a broader grade range spanning 0.10 to 30.0 micron for multi-step finishing sequences

Compatibility

Designed for use as a diamond lapping film on flat lapping plates, flexible backing tools, and automated lapping fixtures where a 4-inch wide roll format is required.

Installation Notes

This product is handled and applied by machinists, optical technicians, and precision finishing specialists. Secure the film firmly to the lapping surface or fixture before use to prevent slipping during the finishing pass. Keep the work surface and film free of contamination between grade changes to avoid cross-contamination of abrasive particle sizes. Dispose of used sections properly and do not reuse film that shows visible loading or tearing.

Technical Specifications

• Abrasive Grade: 9.0 micron
• Width: 4 inches
• Length: 50 feet
• Core Diameter: 3 inches
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Unit of Measure: Roll
• Weight: 1.5 pounds
• UPC: 00051111499603

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000303