8 in Cerium Oxide Lapping Film Discs, PSA-Backed for Optics & Precision Polishing

The 8 in Cerium Oxide Lapping Film Discs (PSA-Backed) feature an ultra-pure cerium oxide abrasive coating combined with a self-adhesive backing, delivering an exceptional scratch-free, high-gloss luster on optical glass, quartz, and lapidary gemstones.

Key Features

• High-Purity Optical Cerium Oxide: Chemico-mechanical polishing action delivers rapid optical clearing and pit-free surface finishing on silica-based glass and gemstones.
• Pressure-Sensitive Adhesive (PSA) Backing: Peel-and-stick adhesive layer mounts securely to standard 8-inch flat lap platen discs or master plates without shifting or lifting at the edges.
• Durable Polyester Film Backing: Heavy-duty uniform Mylar backing prevents disc distortion, tearing, and surface rippling under wet polishing pressure.
• 8-Inch Large Working Format: Ideal for larger flat lap machines, faceting discs, and precision metallurgical polishing platens.

Recommended Applications

• Optical glass lenses, prisms, flat mirrors, and telescope mirror edge polishing.
• Gemstone facet polishing on quartz group minerals (amethyst, citrine, chalcedony, agate, and opal).
• Fiber optic connector face preparation and telecommunications polishing.

Operating Guidelines

• Thoroughly clean and dry the master lap plate before applying the PSA backing.
• Always operate wet with clean water or specialized polishing lubricant.
• Run at low speeds (150–400 RPM) with light, gentle hand pressure to prevent facet edge rounding.