3M 7000028228 Psa Disc 5 in 180 Grit Aluminum Oxide 100 Pack

Product Description

The 3M 7000028228 is a pressure-sensitive adhesive (PSA) abrasive disc designed for surface preparation and finishing work. The disc measures 5 inches in diameter and carries a 180 grit rating, placing it in the very fine grade range. The abrasive mineral is aluminum oxide, bonded to a C-weight paper backing that provides a balance of flexibility and support during use. This disc ships in a 100-pack, making it suitable for shops and technicians who run high disc volume on production finishing or prep work.

The 7000028228 is intended for use with random orbital sanders in both residential and commercial applications. It is well suited for fine sanding passes on wood, painted surfaces, primer coats, and light metal finishing. The PSA mount system allows for quick disc changes without hook-and-loop hardware. The flexible paper backing conforms to slightly contoured surfaces, maintaining consistent abrasive contact. Trades and finishing professionals who run high-cycle sanding operations will find the 100-disc pack format practical for job-site or shop use.

Key Features

• 180 grit very fine grade aluminum oxide abrasive for finish sanding and prep work
• 5-inch diameter PSA backing for direct adhesive mount to compatible sanding pads
• C-weight paper backing balances flexibility and tear resistance
• No vacuum holes — suited for non-dust-collection or sealed-pad setups
• Compatible with random orbital sanders
• 100 discs per pack reduces restocking frequency in high-volume operations
• Part of the 3M 236U series

Compatibility

Designed for use with random orbital sanders equipped with 5-inch PSA sanding pads. No vacuum hole pattern, so use with solid (non-perforated) backup pads only.

Installation Notes

Ensure the sanding pad surface is clean and free of adhesive residue before applying a new disc. Press the PSA disc firmly onto the backup pad from the center outward to eliminate air pockets. Discs without vacuum holes should not be paired with dust-extraction backup pads, as the sealed face will block airflow and may cause overheating. Disconnect the sander from its power source before changing discs.