3M 7100037872 Diamond Lapping Film 15.0 Micron Roll

Product Description

The 3M 7100037872 is a diamond lapping film roll designed for precision finishing of extremely hard materials. Precisely graded diamond abrasive particles are coated onto a dimensionally stable polyester film substrate, producing a consistent, repeatable surface finish pass after pass. This roll measures 3 inches wide by 50 feet long and carries a 15.0 micron grade, placing it in the mid-range of the available 0.10 to 30.0 micron grade spectrum. Technicians and machinists use this film where conventional abrasives cannot hold tolerance or maintain finish consistency on hard substrates such as ceramics, carbide, optical components, and hardened tool steels.

This lapping film is suited for precision grinding, polishing, and surface conditioning applications in industrial, optical, and toolroom environments. It is commonly used in fiber optic connector polishing, precision instrument component finishing, and die and mold work where surface geometry and finish repeatability are critical. The roll format is well suited to automated or semi-automated polishing fixtures and flat-lapping setups. Trades and technicians working with tight-tolerance components in calibration, optical, or toolroom contexts will find this format practical for high-volume or continuous-feed operations.

Key Features

• 15.0 micron diamond abrasive grade for mid-range material removal and surface refinement
• Precisely graded diamond particles ensure consistent, repeatable finish results
• Polyester film backing provides dimensional stability under load
• Roll format (3 inches x 50 ft) supports automated fixtures and extended-run lapping setups
• Compatible with extremely hard materials including ceramics, carbide, and hardened steel
• Part of a broader grade range from 0.10 to 30.0 micron for full finishing sequences

Compatibility

Designed for use on extremely hard materials such as ceramics, carbide, optical glass, and hardened metals. Suitable for flat-lapping, fiber optic polishing, and precision surface conditioning applications where conventional abrasive films are insufficient.

Installation Notes

This product is installed and used by machinists, optical technicians, and precision toolroom professionals. Secure the film to a flat platen or lapping fixture appropriate for the workpiece geometry before use. Ensure the workpiece and fixture are free of contamination that could embed in the abrasive surface and compromise finish consistency. Follow the manufacturer guidance on backing plate hardness and lapping fluid compatibility for the specific substrate being processed.

Technical Specifications

• Abrasive Grade: 15.0 micron
• Grade Range Available: 0.10 to 30.0 micron
• Backing Material: Polyester film
• Width: 3 inches
• Length: 50 ft
• Unit of Measure: Roll
• Weight: 2 pounds
• UPC: 00051111698433

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100037872