3M 7010359521 Diamond Lapping Film Disc 4 Inch Psa

Product Description

The 3M 7010359521 is a PSA-backed diamond lapping film disc engineered for precision finishing on extremely hard materials. Built on the same platform as the 661X series, this 668X-type disc uses precisely graded diamond abrasive particles coated onto a durable polyester film substrate. The pressure-sensitive adhesive (PSA) backing allows quick mounting to compatible flat platens or backup pads. Available in grades ranging from 0.10 to 30.0 micron, it delivers a consistent, repeatable surface finish across a wide range of finishing and polishing applications requiring tight tolerance control.

This disc is suited for precision lapping and polishing tasks in optical, electronics, aerospace, and tooling applications where surface finish consistency is critical. The 4-inch diameter format fits standard PSA-compatible lapping platens. Technicians and machinists working with ceramics, carbide, glass, hardened steel, and similar hard substrates will find this disc appropriate for final finishing and intermediate stock removal steps.

Key Features

• PSA backing for fast, secure platen mounting
• Precisely graded diamond abrasive particles for uniform, repeatable finish
• Polyester film substrate supports flat surface contact and minimizes edge rounding
• Fast cut rate increases throughput compared to conventional lapping films
• Long abrasive life reduces frequency of disc changes
• Available in multiple micron grades from 0.10 to 30.0 micron

Compatibility

Designed for use with PSA-compatible flat lapping platens and backup pads accepting 4-inch diameter abrasive discs.

Installation Notes

This disc is installed by trade professionals and precision machinists using standard lapping equipment. Clean the platen surface thoroughly before applying the PSA-backed disc to ensure full adhesive contact and prevent slippage during use. Avoid contaminating the abrasive surface with oils or debris, as this will reduce cut consistency and abrasive life. Follow equipment manufacturer guidelines for platen speed and applied pressure.

Technical Specifications

• Disc Diameter: 4 inches
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Abrasive Type: Diamond
• Substrate: Polyester Film
• Abrasive Grade Range: 0.10 to 30.0 micron
• Unit of Measure: Each
• Weight: 0.01 pounds
• Package Length: 5.5 inches
• Package Width: 6.5 inches
• Package Height: 0.15 inches
• UPC: 00051111546956

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010359521