3M 7010325679 Diamond Lapping Film Disc 4.25 in

Product Description

The 3M 7010325679 is a diamond lapping film disc designed for precision finishing of extremely hard materials. Precisely graded diamond particles are coated onto a durable polyester film substrate, delivering a consistent and repeatable surface finish across each use. The disc measures 4.25 inches in diameter and is sold individually. It is suited for applications where tight surface geometry and edge sharpness are required. Technicians working with optical components, carbide tooling, ceramics, or fiber optic connectors rely on this type of disc to achieve controlled, uniform material removal.

This disc is used in lapping and polishing operations across industrial, optical, and telecommunications applications. It is well-suited for finishing hard, brittle, or wear-resistant materials where conventional abrasives lose consistency. Available grades range from 0.10 to 30.0 micron, allowing selection based on the required surface finish and the stage of the lapping process. The disc format fits standard lapping fixtures and polishing plates used in shop and lab environments.

Key Features

• Precisely graded diamond particles on polyester film for a consistent, repeatable finish
• Fast cut rate supports increased throughput in production environments
• Promotes flatter surfaces and sharper edges compared to conventional abrasives
• Uniform finish across the full disc surface
• Available grades between 0.10 and 30.0 micron for multi-stage lapping sequences
• Also available in sheets and rolls for alternate fixture configurations

Compatibility

Designed as an OEM-style lapping disc for use with standard lapping and polishing fixtures that accept 4.25-inch diameter film discs.

Installation Notes

Installation and use of diamond lapping film discs is typically performed by precision machining technicians, optical lab technicians, or fiber optic splice technicians. Ensure the lapping plate or fixture surface is clean and free of debris before applying the disc. Secure the disc flat against the plate to prevent edge lift, which can affect finish uniformity. Follow equipment manufacturer guidelines and applicable workplace safety procedures when working with abrasive media.

Technical Specifications

• Diameter: 4.25 inches
• Abrasive Type: Diamond
• Substrate: Polyester film
• Grade Range: 0.10 to 30.0 micron
• Unit of Measure: Each
• Weight: 0.01 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010325679