3M 7000028118 Lapping Film Psa Sheet 1.0 Micron 8.5x11 in

Product Description

The 3M 7000028118 is a precision lapping film sheet designed for fine-tolerance surface finishing in fiber optic polishing and precision electronic applications. The abrasive mineral is aluminum oxide, coated onto a 3 mil polyester film substrate with a pressure-sensitive adhesive (PSA) backing for secure fixture attachment. The film uses a softer resin bond system, which helps produce a consistent, smooth surface finish at a 1.0 micron grade. Each sheet measures 8.5 inches x 11 inches and weighs 0.05 pounds. Fiber optic technicians, electronics assembly shops, and precision tooling specialists are the primary users of this product.

This lapping film is suited for polishing fiber optic connector end-faces and lapping precision electronic components where tight surface tolerances are required. The PSA backing allows the sheet to mount directly to a flat lapping plate or fixture without additional adhesives or tapes. The 1.0 micron grit level makes this sheet appropriate for final or near-final polishing steps, where surface quality is critical and coarser films have already been used in prior passes.

Key Features

• Aluminum oxide abrasive mineral for consistent cut and finish quality
• 1.0 micron grade for fine polishing and final-stage lapping operations
• 3 mil polyester film backing for dimensional stability under load
• PSA backing for tool-free sheet mounting to flat lapping fixtures
• Softer resin bond system reduces surface micro-scratching on precision parts
• Sheet format (8.5 inches x 11 inches) compatible with standard lapping fixtures and hand lapping setups

Compatibility

Designed for use in fiber optic connector polishing applications and precision surface lapping operations on electronic components where a 1.0 micron aluminum oxide PSA sheet format is specified.

Installation Notes

Applied by fiber optic technicians, precision assembly technicians, or tooling specialists using standard flat lapping fixtures or polishing pucks. Ensure the lapping plate or fixture surface is clean and free of debris before applying the PSA sheet to prevent uneven seating. Apply firm, even pressure across the sheet surface when adhering to the fixture to eliminate air pockets. Follow the equipment manufacturer's lapping sequence for grit progression and do not skip micron grades in multi-step polishing processes.

Technical Specifications

• Abrasive Mineral: Aluminum Oxide
• Micron Grade: 1.0 micron
• Backing Material: 3 mil polyester film
• Adhesive Type: Pressure-Sensitive Adhesive (PSA)
• Sheet Dimensions: 8.5 inches x 11 inches
• Weight: 0.05 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028118