3M 7000119250 Psa Disc 150 Grit Silicon Carbide 5 Inches

Product Description

The 3M 7000119250 is a pressure-sensitive adhesive (PSA) abrasive disc designed for use with random orbital sanders in light material removal, surface prep, and finishing applications. Built on an A-weight paper backing, the disc uses silicon carbide abrasive at 150 grit, placing it in the very fine grade range. This combination delivers consistent scratch patterns on wood, composites, and painted surfaces. The disc measures 5 inches in diameter and includes 5 vacuum holes to support dust extraction during sanding. Each package contains 125 discs. This product is part of the 3M 426U series and is used by finish carpenters, cabinetmakers, auto body technicians, and general trades requiring controlled surface refinement.

This disc is suited for finish sanding on flat and mildly contoured surfaces in residential and light commercial applications. The flexible paper backing conforms slightly to surface irregularities, making it practical for final prep passes before coating, staining, or priming. The PSA mount allows quick disc changes on compatible 5-inch random orbital sander pads. The gray silicon carbide abrasive is well suited to harder materials and finish work where aluminum oxide discs may leave a coarser scratch pattern.

Key Features

• 150 grit silicon carbide abrasive — very fine grade for finish sanding and final surface prep
• 5-inch diameter with 5 vacuum holes for dust-extraction compatibility
• A-weight paper backing provides flexibility for light contouring
• PSA mount for fast disc changes on standard 5-inch random orbital sander pads
• Part of the 3M 426U series — consistent abrasive construction across the line
• 125 discs per package for extended job-site use

Compatibility

Designed for use with 5-inch random orbital sanders equipped with PSA-style backup pads and 5-hole dust extraction ports. Confirm backup pad hole pattern matches disc hole layout before use.

Installation Notes

Ensure the sander backup pad is clean and free of debris before applying the PSA disc — contaminated pads reduce adhesion and cause premature disc release. Power down and disconnect the sander before mounting or removing discs. Do not exceed the sander manufacturer's rated RPM for the disc diameter. Discs that have lost adhesion or show visible loading should be replaced to maintain consistent finish quality.