8 in 0.5μm Cerium Oxide Lapping Film Disc – Plain and PSA Backing Option

The 8 in 0.5μm Cerium Oxide Lapping Film Disc is a high-purity optical-grade lapping disc available in both plain and pressure-sensitive adhesive (PSA) backing options, engineered specifically for high-clarity finishing on glass and quartz gemstones.

Key Features

• High-Purity 0.5μm Cerium Oxide: Chemically reactive sub-micron cerium oxide mineral provides rapid, flawless optical clarity on silica-based materials without surface orange peel.
• Versatile Backing Options: Choose between plain backing (held by surface water tension or magnetic master lap) or convenient peel-and-stick PSA backing.
• 8-Inch Diameter Platen Fit: Standard 8-inch disc size engineered to fit flat lap machines, faceting units, and metallurgical polishers.
• High-Strength Mylar Film Base: 3 mil polyester backing ensures true flatness and high tear resistance under continuous wet polishing.

Recommended Applications

• Optical glass polishing, scientific flat mirrors, camera filters, and prisms.
• Gemstone facet polishing on quartz group minerals (amethyst, citrine, agate, chalcedony, and opal).
• Micro-finishing and final planarization in optoelectronic and metallurgical laboratories.

Operating Guidelines

• Ensure master lap platen is flat, smooth, and clean before disc placement.
• Operate wet with clean water or specialized polishing lubricant to keep temperatures low.
• Run at low speeds (150–350 RPM) with light touch to maintain crisp gemstone facet meets.