3M 7000000314 Diamond Lapping Film 661X 15 Micron Roll

Product Description

The 3M 7000000314 is a diamond lapping film in the 661X Series, designed for precision surface finishing and polishing of hard materials. It uses diamond mineral abrasive, which delivers consistent, controlled material removal on substrates such as ceramics, carbide, optical glass, and hardened steel. The film is supplied in a roll format measuring 4 inches wide by 50 feet long on a 3-inch core, with a 15.0 micron grade. This grade produces a fine, uniform surface finish suited for final-stage lapping, edge refinement, or fiber optic connector polishing. Technicians and machinists working in precision fabrication, optics, or tooling applications are the primary installers and users of this product.

The 661X Series diamond lapping film is used in applications requiring repeatable, high-precision surface conditioning. Common uses include polishing fiber optic connectors, lapping carbide tooling, finishing ceramic components, and refining precision mechanical parts. The roll format allows users to cut sheets or strips to the required size for handheld lapping, fixture-mounted polishing, or machine applications. It is used in both shop and field service environments where consistent finish quality is critical.

Key Features

• Diamond mineral abrasive for consistent cutting on hard and brittle materials
• 15.0 micron grade delivers fine surface finishes in final lapping stages
• Roll format: 4 inches wide by 50 feet long, 3-inch core for easy dispensing
• Film backing provides dimensional stability and conforms to flat lapping surfaces
• Suitable for dry or wet lapping applications depending on the substrate

Compatibility

Designed as an OEM-style replacement and standard-supply lapping film for precision finishing operations requiring diamond abrasive in a flexible roll format.

Installation Notes

This product is used by precision machinists, optics technicians, and trade professionals performing surface finishing work. Secure the film to a flat lapping plate or fixture before use to prevent movement during the lapping process. When cutting sections from the roll, use clean, sharp scissors or a blade to avoid fraying the film edge. Follow the substrate manufacturer or process specification guidelines for lubrication, pressure, and stroke technique.

Technical Specifications

• Series: 661X
• Mineral: Diamond
• Grade: 15.0 Micron
• Width: 4 inches
• Length: 50 feet
• Core Size: 3 inches
• Unit of Measure: Roll
• Weight: 6 pounds
• UPC: 00051111500620

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000314