3M™ 661X Diamond Lapping Film Sheet - 4.5 x 4.5 inch 1µm (micron)

The 3M™ Diamond Lapping Film 661X is an abrasive film used for polishing the end-face of fiber optic connectors. Its purpose is to shape the fiber geometries, such as restoring or forming the Radius of Curvature and Apex Offset of the ferrule. Diamond film exhibits an extended lifespan compared to conventional films, and its high-cut rate enables more efficient material removal for a faster polishing process. The 4.5" x 4.5" sheet is used for applications in fiber optic connector processing, flat lapping, and superfinishing.

Lapping Film Features:

• Film Color: Lavender
• Grit Size: 1 µm
• Base Film Material: Polyester
• Base Film Thickness: 3 mil (75 µm)
• Quantity: Single Sheet
• Non-PSA backed film
• Bonding Resins: Standard resin

Product Life: 5 years from the date of manufacture when stored in the original packaging materials and stored at 10°C - 30° C (50°F - 86°F) and 30-60% relative humidity.