3M 7000119236 Psa Disc 120 Grit Silicon Carbide 5 in 125pk

Product Description

The 3M 7000119236 is a pressure-sensitive adhesive (PSA) abrasive disc designed for material removal, surface preparation, and finishing work. Built on a lightweight A-weight paper backing with a silicon carbide abrasive grain, this disc delivers consistent fine-grade cutting action at 120 grit. The flexible paper backing conforms to contoured surfaces, making it well suited for finish sanding on wood, composites, and soft metals. Each disc measures 5 inches in diameter and mounts directly to PSA-compatible backup pads without fasteners or clips. The discs are gray in color and ship in a package of 125 units. This disc is part of the 3M 426U series.

These discs are designed for use with random orbital sanders in both residential and light commercial finishing applications. Typical uses include sanding bare wood prior to coating, scuffing painted surfaces for adhesion, and finish work on composite materials. The silicon carbide grain cuts cleanly on harder or more brittle substrates where aluminum oxide may glaze. The 5-inch diameter and PSA mount make these a direct fit for standard random orbital sanding pads found in woodworking shops, cabinet shops, and finish carpentry operations. No vacuum holes are included, so these are intended for solid-pad setups rather than dust-extraction systems.

Key Features

• 120 grit silicon carbide abrasive for fine-grade cutting and surface finishing
• Pressure-sensitive adhesive (PSA) backing for tool-free disc mounting and removal
• A-weight paper backing provides flexibility for contoured surface work
• Compatible with random orbital sanders using 5-inch PSA backup pads
• No vacuum holes — designed for solid backup pad configurations
• Packaged as 125 discs per unit for high-volume shop use

Compatibility

Designed for use with random orbital sanders equipped with 5-inch PSA-style backup pads. No vacuum hole pattern is present, so these discs are not suitable for hook-and-loop or dust-extraction pad configurations.

Installation Notes

Ensure the sander is powered off and unplugged before changing discs. Clean the backup pad surface of dust and debris before applying a new PSA disc to ensure full adhesive contact. Press the disc firmly onto the pad from center to edge to eliminate air pockets. Discard discs that show loading, glazing, or tearing, as worn abrasive increases heat and reduces cut quality.