8" Aluminium Oxide Precision Lapping Film Discs – 10-Pack – PSA-Backed for Glass, Optics & Gemstone Polishing

Aluminum Oxide Lapping Film is composed of alumina, a natural material derived from bauxite. Available in two phases—gamma (Mohs 8) and alpha (Mohs 9, 2000 HV)—this abrasive excels in final-stage polishing due to its exceptional hardness and durability.

Key Characteristics & Applications:

• Precision Finishing: Ideal for semiconductor dies, fiber optics, optical components, and ceramic capacitors.

• Flatness Control: Ensures uniform surfaces across materials with mixed hardness, critical for hard drive read-write heads and ceramic seals.

• Construction: Features a rigid 3-mil polyester film bonded with epoxy for abrasive stability.

Abrasive Comparisons:

• Common lapping abrasives include diamond, silicon carbide, alumina, and ceria.

• Alumina Advantages: Superior wear resistance for high-volume polishing.

Technical Workflow Integration:

• Compatible with PSA-backed systems or metal plates for precision alignment.

• Optimized for both wet and dry processes.

Note: Hyperlinks align with lapidary and precision manufacturing workflows, supporting industries such as semiconductors, optics, and advanced ceramics.