Norton 66261136375 Psa Disc 120 Grit Aluminum Oxide 3.5 in

Product Description

The NORTON 66261136375 is a PSA (pressure-sensitive adhesive) abrasive disc designed for sanding and finishing operations in trade and light industrial environments. Part of the A275 series, this disc uses aluminum oxide abrasive on a B-weight paper backing, delivering consistent cut and finish on wood, metal, and composite surfaces. At 120 grit, it falls in the fine grade range, making it suited for finish sanding, surface preparation before coating, and stock removal on softer materials. Each pack contains 100 discs measuring 3.5 inches in diameter with no vacuum holes. The flexible paper backing conforms to slightly contoured surfaces, and the PSA backing mounts directly to compatible random orbital and disc sanders without clamps or fasteners.

These discs are used in woodworking shops, metal fabrication, automotive body work prep, and general surface finishing. The 3.5-inch diameter fits Sanders with matching PSA platen sizes commonly found in both stationary and portable configurations. The A275 series is a general-purpose line suited for production sanding tasks where consistent grit performance across a high disc count is required. Installers and shop technicians working on painted surfaces, bare wood, or light metal stock will find the 120-grit cut rate appropriate for pre-finishing and blending work.

Key Features

• 120-grit aluminum oxide abrasive for fine-grade material removal and surface prep
• PSA backing for tool-free mounting on compatible 3.5-inch PSA platens
• B-weight paper backing provides flexibility for slightly contoured work surfaces
• No vacuum holes — suited for sanders without dust extraction ports
• 100 discs per pack for high-volume production or repeated daily use
• Part of the NORTON A275 general-purpose abrasive series

Compatibility

Designed for use with random orbital and disc sanders equipped with a 3.5-inch PSA (pressure-sensitive adhesive) platen. No vacuum holes are present, so this disc is not suited for sanders that rely on through-platen dust extraction.

Installation Notes

Ensure the sander platen is clean and free of adhesive residue before applying a new disc — contamination reduces bonding strength and causes premature disc separation. Peel the release liner and press the disc firmly onto the platen, working from the center outward. Do not exceed the sander manufacturer's rated RPM for the disc diameter. Spent discs should be removed carefully to avoid tearing the backing material, which can leave adhesive on the platen.