3M 7000000304 Diamond Lapping Film 9.0 Micron 8x50ft Roll

Product Description

The 3M 7000000304 is a diamond lapping film designed for precision surface finishing on extremely hard materials. The film uses precisely graded diamond abrasive particles coated onto a dimensionally stable polyester backing. At 9.0 micron grade, it produces a consistent, repeatable finish suitable for applications demanding tight surface tolerances. The roll format measures 8 inches wide by 50 feet long on a 3-inch core, making it compatible with standard lapping and polishing equipment. This product is used by technicians and tradespeople who require controlled material removal and fine finishing on hard substrates such as carbide, ceramic, glass, and hardened steel.

This lapping film is suited for precision finishing operations in tool and die, fiber optic connector polishing, semiconductor, and advanced manufacturing environments. The roll format allows the user to cut or dispense material as needed for flat lapping, cylindrical polishing, or hand-lapping fixtures. The 9.0 micron grade fits into a broader finishing sequence, typically used after coarser stock removal steps and before finer sub-micron finishing passes. It performs on substrates where conventional abrasive films would wear too quickly or fail to hold tolerance.

Key Features

• Precisely graded diamond particles deliver consistent cut rate and finish across the full roll
• 9.0 micron abrasive grade for controlled material removal on hard surfaces
• Polyester film backing provides dimensional stability under lapping pressure
• 8-inch width by 50-foot length on a 3-inch core fits standard dispensing equipment
• Available grade range of 0.10 to 30.0 micron supports multi-step finishing sequences

Compatibility

Designed for use on extremely hard materials including carbide, ceramic, glass, and hardened metal surfaces where precise, repeatable surface finishing is required. Fits standard 3-inch core lapping film dispensers and polishing equipment accepting 8-inch wide roll stock.

Installation Notes

This film is handled and applied by precision finishing technicians or trained tradespeople familiar with lapping and polishing procedures. Ensure the workpiece and lapping surface are clean and free of contamination before use to avoid scratching from embedded particles. Use appropriate personal protective equipment when handling diamond abrasive media. Follow equipment manufacturer guidelines for roll tensioning and feed rate to maintain consistent finish results.

Technical Specifications

• Abrasive Grade: 9.0 micron
• Roll Width: 8 inches
• Roll Length: 50 feet
• Core Diameter: 3 inches
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Weight: 3 pounds
• Unit of Measure: Roll
• UPC: 00051111499641

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000304