3M 7010307665 Diamond Lapping Film Disc 4 Inch Psa

Product Description

The 3M 7010307665 is a 4-inch diameter PSA-backed diamond lapping film disc from the 668X series, designed for precision finishing of extremely hard materials. It is built on a dimensionally stable polyester film base and uses precisely graded diamond abrasive particles to deliver a consistent, repeatable surface finish. Grades ranging from 0.10 to 30.0 micron make it suitable for a wide range of fine-finishing applications. Technicians and machinists rely on this disc where surface geometry, flatness, and finish consistency are critical requirements.

This disc is used in precision lapping and polishing operations across industries that work with hard substrates such as ceramics, carbide, hardened steel, optical components, and fiber optic connectors. Its PSA backing allows quick, secure mounting to flat lapping plates or backing discs. The 668X is the PSA-backed counterpart to the 661X film product, making it a direct substitute where pressure-sensitive adhesive attachment is preferred over loose-sheet or roll formats.

Key Features

• PSA backing for quick, secure mounting on lapping plates and rigid substrates
• Precisely graded diamond particles for a uniform, repeatable surface finish
• Available in grades from 0.10 to 30.0 micron to match a wide range of finish requirements
• Flat surface contact and low edge rounding preserve workpiece geometry
• Fast cut rate supports increased throughput during lapping operations
• Extended abrasive life reduces the frequency of disc changes

Compatibility

Designed as a PSA-backed replacement for the 3M 661X diamond lapping film and suitable for use on flat lapping plates and rigid backing discs that accept 4-inch diameter PSA-mount abrasive media.

Installation Notes

Installation is performed by precision machinists or technicians familiar with lapping and polishing procedures. Ensure the lapping plate or backing surface is clean and free of debris before applying the PSA disc to prevent uneven contact. Apply firm, even pressure across the disc surface when mounting to eliminate air pockets. Follow the equipment manufacturer's guidelines for platen speed and lubricant use appropriate to the workpiece material and target finish grade.

Technical Specifications

• Disc Diameter: 4 inches
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Abrasive Material: Diamond
• Film Substrate: Polyester
• Available Grades: 0.10 to 30.0 micron
• Series: 668X
• Unit of Measure: Each
• Weight: 0.01 pounds
• Package Dimensions: 6.7 x 6.6 x 7.8 inches

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010307665