Merit Abrasives 08834172117 Psa Disc 9 in 40 Grit

Product Description

The MERIT ABRASIVES 08834172117 is a 9-inch PSA (pressure-sensitive adhesive) abrasive disc designed for aggressive material removal on flat and contoured surfaces. Built with aluminum oxide abrasive on a flexible cloth backing, this disc delivers coarse 40-grit cutting action suited for grinding welds, shaping metal, removing rust, and stock removal on wood or composites. The flexible cloth backing conforms to workpiece surfaces and holds up under sustained use. At 0.5 pounds per disc, it is lightweight and easy to handle during extended grinding or finishing operations. No vacuum holes are included, making it compatible with solid-face backup pads.

This disc is intended for use in metal fabrication, woodworking, and general surface preparation applications. The 40-grit aluminum oxide construction makes it well suited for initial material removal passes where speed of cut matters more than surface finish. It is commonly used in industrial shops, trade environments, and maintenance facilities where PSA disc grinders or random orbital sanders with adhesive-mount backup pads are part of the standard workflow. The black cloth backing provides added durability compared to paper-backed alternatives in demanding conditions.

Key Features

• 9-inch diameter PSA disc with pressure-sensitive adhesive mount for tool-free disc changes
• 40-grit aluminum oxide abrasive for aggressive coarse-grade stock removal
• Flexible cloth backing conforms to surface contours and resists tearing
• No vacuum holes — compatible with solid-face backup pads
• Black disc color for easy identification in multi-grit environments
• Sold individually — MOQ of 1 disc per order

Compatibility

Designed as a direct-mount replacement PSA disc for 9-inch adhesive-mount backup pads used on random orbital sanders, disc grinders, and rotary polishers that accept 9-inch PSA-style abrasive discs.

Installation Notes

Installation is performed by trade professionals or skilled operators using disc grinders or orbital sanders equipped with a 9-inch PSA backup pad. Power down and disconnect the tool from its power source before removing a worn disc or mounting a new one. Ensure the backup pad surface is clean and free of adhesive residue before applying the new disc to achieve a secure bond. Follow applicable ANSI and OSHA abrasive product safety guidelines, including use of appropriate eye protection and guarding during operation.