Explore Our Aluminum Oxide Lapping Film Used for Precision Surface Polishing

Grit Sizes: 0.05 µm – 60 µm | 8" Discs & 8-1/2" x 11", 9" x 11" Sheets | Microfinishing/Lapping Film PSA

Introduction

Aluminum Oxide (AO) Lapping Film is the premier solution for precision surface polishing, providing consistent, high-quality results for a wide variety of materials, including metals, ceramics, composites, fiber optics, and optical components. Available in a range of grit sizes from 0.05 µm to 60 µm, our aluminum oxide lapping films are designed to meet the needs of coarse pre-polishing to ultra-fine finishing stages.

Our 8" discs and 8-1/2" x 11", 9" x 11" sheets are designed for microfinishing applications in laboratories, research, metallography, and industrial polishing processes. Featuring Pressure-Sensitive Adhesive (PSA) backing, they provide easy attachment to polishing plates and ensure clean removal after each use. Whether you're polishing metals, ceramics, or fiber optics, our aluminum oxide lapping films are a trusted solution for achieving smooth, flat, and precise finishes.

Why Choose Aluminum Oxide Lapping Films?

Versatile, High-Performance Polishing

Aluminum oxide is one of the most versatile abrasives, known for:

• Consistent performance across a broad grit range

• Efficient material removal with minimal scratching

• Long-lasting durability and extended service life

• Cost-effective and high-quality alternative to diamond abrasives for many applications

Whether you're working on coarse pre-polishing or need mirror finishes for optical components, our aluminum oxide films provide consistent results while ensuring that your polishing process is both efficient and effective.

Our Range of Grit Sizes: From 60 µm to 0.05 µm

Coarse Grits (60 µm - 30 µm):

• Initial Pre-Polishing: Ideal for aggressive material removal and grinding of rough surfaces

• Applications: Metallography, Ceramics, Composites, and Sintered materials

Medium Grits (15 µm - 9 µm):

• Intermediate Polishing: Used to smooth and remove deeper scratches from coarser grits

• Applications: Electronics, Optical Components, Fiber Optics, and Metallography

Fine Grits (6 µm - 1 µm):

• Fine Polishing: Used for final preparation of metallic and non-metallic materials, ensuring smooth surfaces

• Applications: Microelectronics, Optical Lenses, Fiber Optic Ferrules, and Precision Components

Ultra-Fine Grits (0.5 µm - 0.05 µm):

• Ultra-Fine Polishing: Achieves mirror finishes with defect-free surfaces for high-precision components

• Applications: Advanced Metallography, Optical Lenses, Photonic Devices, and SEM Sample Preparation

Key Features of Our Aluminum Oxide Lapping Film

Pressure-Sensitive Adhesive (PSA) Backing

• Secure mounting on polishing plates, glass, or metal fixtures

• Clean removal without residue

• Strong adhesion during use, even under light pressure

Consistent Abrasive Properties

• Uniform particle distribution ensures even material removal

• Resin-bonded abrasive layer provides long-lasting abrasive action

• Controlled cutting with minimal risk of over-polishing

High Durability and Longevity

• Durable polyester backing (PET/Mylar) ensures the film holds its shape under pressure

• Resistant to curling, tearing, and stretching for maximum efficiency during use

• Suitable for both manual and automated polishing processes

Versatile Applications

• Works in wet, dry, or lubricated polishing methods

• Can be used in a variety of industries such as metallography, electronics, fiber optics, optics, and advanced materials science

Available Sizes and Formats

Our Aluminum Oxide Lapping Films are available in various sizes, making them adaptable to different polishing setups:

Applications

Metallography & Materials Science

• Pre-polishing and surface preparation of metals, alloys, and ceramics for microscopic analysis

• Used for creating defect-free cross-sections and samples for SEM or optical microscopy

Electronics & Fiber Optics

• Fiber Optic Ferrules: For planarization, ensuring smooth, flat end-faces for optical connectors

• Polishing of electronic components: For smooth surfaces and precise preparation of contact surfaces

Optics & Precision Components

• Optical Lenses and Prisms: Final polishing for optical clarity, light transmission, and surface smoothness

• Precision polishing for optical systems, prisms, mirrors, and high-precision flatness applications

Product Specifications

Grit Progression for Polishing

Typical polishing sequence:
60 µm → 30 µm → 15 µm → 9 µm → 6 µm → 3 µm → 1 µm → 0.5 µm → 0.05 µm

Our aluminum oxide films cover all stages of material surface preparation from aggressive material removal to mirror-like finishes for the most demanding applications.

Best Practices for Using Aluminum Oxide Lapping Films

• Clean your work surface before applying the film to ensure optimal adhesion and results

• Mount securely on a flat platen or polishing surface for consistent results

• Use light to moderate pressure for optimal results without over-polishing or under-polishing the material

• Rinse periodically to remove debris and maintain optimal polishing efficiency

• Store properly to maintain the integrity of the adhesive and backing material

Conclusion

Aluminum Oxide Lapping Film is an essential tool for precision surface polishing, whether you're preparing metallographic samples, polishing fiber optic ferrules, or achieving mirror-like finishes on optical components. With a wide grit range (0.05 µm to 60 µm), PSA backing, and superior durability, our films provide a reliable, cost-effective solution for high-precision applications across multiple industries.