3M 7000044874 Lapping Film 0.05 Micron 8.5x11 Sheet

Product Description

The 3M 7000044874 is a precision lapping film sheet designed for ultra-fine surface finishing and polishing applications. It features aluminum oxide mineral bonded to a 3 mil polyester film base using a durable resin system. At 0.05 micron grade, this sheet delivers the finest level of abrasion available in the 3M lapping film line, making it suitable for final-stage polishing where surface finish tolerances are extremely tight. Each sheet measures 8.5 inches x 11 inches. Technicians working in fiber optic termination, precision component finishing, and roll superfinishing will find this grade appropriate for the final polishing pass.

This lapping film sheet is primarily used in fiber optic connector finishing to achieve low-loss, high-quality end-face geometry. It is also applied in roll superfinishing operations where sub-micron surface roughness is required. The 0.05 micron grade is the finishing step in a multi-stage lapping sequence, typically following coarser grades to remove prior-stage scratches and bring the surface to final specification. Both field technicians and bench-level production environments use this product.

Key Features

• 0.05 micron aluminum oxide mineral for ultra-fine final-stage polishing
• Coated on a dimensionally stable 3 mil polyester film backing
• Durable resin bond system maintains consistent cut and finish across the sheet
• Sheet format at 8.5 inches x 11 inches suits both hand lapping and fixture-mounted use
• Suited for fiber optic end-face finishing and roll superfinishing applications

Compatibility

Designed for use in fiber optic connector polishing and roll superfinishing processes as a final-stage lapping film in multi-step abrasive sequences.

Installation Notes

Lapping film is installed by technicians and production personnel performing precision surface finishing. Secure the sheet flat against a lapping plate or backing surface to prevent wrinkling or uneven abrasion. Ensure the workpiece and fixture are clean and free of debris from prior lapping stages before progressing to the 0.05 micron step. Follow the equipment manufacturer guidelines and any applicable workmanship standards for the specific application.

Technical Specifications

• Mineral: Aluminum Oxide
• Grade: 0.05 Micron
• Backing: 3 mil Polyester Film
• Sheet Size: 8.5 inches x 11 inches
• Bond System: Resin
• Weight: 0.03 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044874