Merit Abrasives 08834172088 Psa Disc 8 in 40 Grit

Product Description

The MERIT ABRASIVES 08834172088 is a pressure-sensitive adhesive (PSA) abrasive disc designed for aggressive material removal on flat surfaces. Built with aluminum oxide abrasive on a flexible cloth backing, this disc delivers coarse 40-grit cutting action suitable for grinding, shaping, and surface preparation. The disc measures 8 inches in diameter and weighs 0.02 pounds. The PSA mount allows fast disc changes on compatible sanders without additional hardware. The flexible cloth backing conforms slightly to the workpiece, maintaining consistent contact across the cut zone. Fabricators, machinists, and metalworkers are the primary installers and users of this consumable.

This disc is suited for use in metal fabrication shops, woodworking operations, and general manufacturing environments where coarse stock removal is required. The 40-grit aluminum oxide construction handles initial surface prep, weld spatter removal, scale removal, and aggressive shaping tasks. It is a single-disc unit sold individually. The flexible backing makes it usable on both rigid and slightly contoured flat surfaces. No vacuum holes are included, so it is intended for use on non-vacuum PSA disc sanders or backing plates.

Key Features

• 40-grit aluminum oxide abrasive for fast, coarse material removal
• 8-inch diameter fits standard PSA backing plates of the same size
• Flexible cloth backing conforms to work surface and resists tearing
• Pressure-sensitive adhesive mount for tool-free disc changes
• No vacuum holes — compatible with solid PSA backing plates
• Black disc color aids in visual wear monitoring during use

Compatibility

Designed as an OEM-style replacement or consumable fitment for 8-inch PSA disc sanders and backing plates requiring a cloth-backed, non-vacuum abrasive disc.

Installation Notes

Installation is performed by the operator — no licensed trade is required for disc changes. Power down and unplug the sander or disconnect compressed air before swapping discs. Peel the release liner from the PSA backing and center the disc firmly onto a clean, dry backing plate before applying pressure across the full face to seat the adhesive. Discard discs showing visible loading, glazing, or torn backing material, as degraded abrasives increase heat buildup and reduce cut quality.