3M 5″ 3 Micron PSA Disc Roll

3M 5″ 3 Micron PSA Disc Roll

This 3M Abrasives  3M™ 5-inch PSA Disc Roll with 3 µm aluminum oxide abrasive—often called 3M™ Microfinishing or Wetordry™ film discs—is designed for fine polishing tasks. It works especially well on metals, plastics, primers, and coated surfaces.

Key Features

• Smooth and consistent results – Thanks to its micron-graded aluminum oxide, this disc offers a fine and uniform finish that lasts.

• Built to last – With a tough 3 mil polyester film backing (Type D), it resists tearing while remaining flexible for easy handling.

• Cleaner operation – The open-coat design, along with an anti-loading layer, helps reduce clogging and keeps performance steady.

• Fast changeover – The pressure-sensitive adhesive (PSA) backing allows for quick and clean disc changes, ideal for multi-step processes.

Best For

• Final polishing of plastic, metal, coatings, or composite materials

• Getting smooth, defect-free finishes where precision matters

• Use in workshops—especially automotive or industrial—where consistent results are critical

• Multi-step sanding and polishing systems that require minimal dust and high control

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