3M 7000000287 Lapping Film 40 Micron 8.5x11 Sheet

Product Description

The 3M 7000000287 is a precision lapping film sheet designed for fine abrasive finishing applications requiring tight surface finish control. The sheet measures 8.5 inches by 11 inches and carries a 40.0-micron aluminum oxide mineral coating bonded to a 3-mil polyester film backing using a durable resin system. At 0.03 pounds per sheet, it is lightweight and easy to handle. This product is used by technicians and finishing specialists who need consistent, repeatable abrasive performance on sensitive or high-tolerance surfaces. The polyester film backing provides dimensional stability, keeping the abrasive layer flat and uniform throughout the finishing process.

This lapping film is suited for precision finishing work across industrial and technical trade applications. Common uses include fiber optic connector end-face finishing, where controlled surface quality is critical to signal performance, and roll superfinishing in manufacturing environments. The 40.0-micron grade positions this sheet on the coarser end of the available range, making it appropriate for initial stock removal or aggressive smoothing before progressing to finer micron grades. It is sold individually as a single sheet with a minimum order quantity of 200 sheets.

Key Features

• 40.0-micron aluminum oxide abrasive for controlled, repeatable material removal
• 3-mil polyester film backing provides dimensional stability and consistent flatness
• Durable resin bond system maintains abrasive integrity through the finishing process
• 8.5 x 11 inch sheet format is easy to cut, mount, or use flat
• Suitable for fiber optic finishing and roll superfinishing applications
• Available across a range of grades from 0.05 to 60.0 micron for multi-step finishing sequences

Compatibility

Designed for use in fiber optic end-face finishing and roll superfinishing applications. Suitable for any precision lapping process that requires a stable, flat abrasive film sheet at the 40.0-micron grade level.

Installation Notes

This lapping film is used by technicians performing precision surface finishing and should be handled with clean, dry hands or gloves to avoid contaminating the abrasive surface. Secure the sheet flat against a backing plate or lapping fixture before use to maintain consistent contact pressure. When used in multi-step finishing sequences, progress from coarser to finer micron grades and replace sheets when abrasive performance degrades. No power tools or special equipment codes apply to manual lapping use, though follow all applicable workplace safety practices when operating powered lapping or polishing equipment.

Technical Specifications

• Abrasive Mineral: Aluminum oxide
• Micron Grade: 40.0 micron
• Backing Material: 3-mil polyester film
• Sheet Dimensions: 8.5 inches x 11 inches
• Weight: 0.03 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 200
• UPC: 00051144140534

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000287