Norton 66254487417 Psa Disc 5 in 100 Grit Silicon Carbide 100pk

Product Description

The NORTON 66254487417 is a pressure-sensitive adhesive (PSA) abrasive disc designed for surface preparation, finishing, and stock removal tasks on a wide range of substrates. Measuring 5 inches in diameter with a 100-grit silicon carbide abrasive, this disc falls in the fine-grade range and delivers consistent scratch patterns suited to finishing operations. The paper backing carries a B-weight rating, providing a balance of flexibility and support that allows the disc to conform to slightly contoured surfaces. These discs are sold in a 100-disc pack and are compatible with PSA-style random orbital and disc sanders commonly found in professional finishing environments.

This disc is well suited for use on non-ferrous metals, composites, plastics, glass, stone, and wood where a fine surface finish is required. The silicon carbide abrasive cuts sharply and is particularly effective on hard, brittle materials that would wear down aluminum oxide abrasives more quickly. Typical applications include final-pass sanding before coating, paint prep, and light deburring work. The flexible paper backing allows the disc to track along gentle curves without lifting at the edges, making it a practical choice for both flat and mildly contoured workpieces in production or field service settings.

Key Features

• 5-inch diameter PSA backing for direct attachment to compatible sanding pads
• 100-grit silicon carbide abrasive for fine-grade cutting and surface finishing
• B-weight paper backing offers flexibility for use on contoured surfaces
• No vacuum holes — suited for solid backing plates without dust-extraction ports
• Part of the A413 series; 100 discs per pack for production use

Compatibility

Designed as a PSA-style replacement disc for 5-inch hook-and-loop or PSA backing pad sanders used in metalworking, woodworking, and composite finishing applications.

Installation Notes

Installation is performed by pressing the PSA-backed disc firmly onto a clean, dry 5-inch sanding pad; ensure the pad surface is free of debris before application to achieve full adhesion. Power down the sander and disconnect it from the power source before changing discs. Inspect the disc for tears or uneven wear before each use, and replace when abrasive loading or glazing reduces cutting efficiency. Disposal of spent abrasive discs should follow applicable local regulations for composite waste materials.