3M 7000118099 Psa Abrasive Disc 180 Grit 5 in 100 Pack

Product Description

The 3M 7000118099 is a pressure-sensitive adhesive (PSA) abrasive disc designed for use with random orbital sanders in surface preparation and finishing applications. Built on an F-weight paper backing, this disc uses aluminum oxide abrasive at 180 grit, placing it in the very fine grade range. The gold-colored disc measures 5 inches in diameter and comes in a pack of 100. The flexible paper backing conforms to slightly contoured surfaces, helping maintain consistent scratch patterns. No vacuum holes are included, making it suited for solid-pad backing plates. Licensed tradespeople and finishing contractors rely on this disc for final sanding stages before coating or finishing.

This disc is intended for use with random orbital sanders in both residential and light commercial finishing environments. Typical applications include wood sanding, paint prep, metal finishing, and final surface smoothing before primer or topcoat application. The 180-grit aluminum oxide construction removes fine scratches and levels surfaces without aggressive stock removal. The PSA backing allows quick disc changes on compatible sticky-pad backing plates, reducing downtime during high-volume finishing work. Each pack contains 100 discs, making it practical for production or shop environments where disc turnover is frequent.

Key Features

• 180-grit aluminum oxide abrasive rated as very fine grade for final sanding and surface prep
• F-weight paper backing provides flexibility for contoured surface contact
• Pressure-sensitive adhesive (PSA) mount for fast disc swaps on sticky-pad orbital sanders
• 5-inch diameter fits standard random orbital sander backing plates
• No vacuum holes — designed for solid backing plates without dust extraction ports
• 100 discs per pack for production or high-volume shop use
• Gold disc color for easy grit identification on the shop floor

Compatibility

Designed for use with random orbital sanders equipped with 5-inch PSA (sticky-pad) backing plates. Not compatible with hook-and-loop backing plates or sanders requiring vacuum-hole disc configurations.

Installation Notes

Installation of PSA discs should be performed with the sander powered off and disconnected from its power source. Align the disc centered on the backing plate before pressing firmly to ensure full adhesive contact and to prevent disc slippage during operation. Avoid touching the adhesive surface with bare hands, as skin oils reduce bonding strength. Discard discs that show loading, glazing, or edge lifting before they cause uneven scratch patterns on the workpiece.