3M™ Diamond Microfinishing Film PSA Disc 675L, 30 Mic 5MIL, Green, 8 in x NH, Die 800L

Diamond Mineral: Sharp Cut, Fine Finishes

Our 3M™ Diamond Microfinishing Film PSA Disc 675L was designed for fast finish reduction on hard materials – it’s a disc that helps operators swiftly and effectively remove thermal spray coatings, ceramics, carbides, chilled iron, and granite. Spanning markets, 675L is commonly used in the transportation, general industrial, precision grinding and finishing, and aerospace industries. When moderate to medium pressure is applied, the diamond abrasive cuts well, offering an efficient alternative in most applications except those requiring the absolute finest finishes. This quality makes it a superb option for tough coating and hard-to-grind material removal.

Polyester-Backed Abrasive – May Be Run Wet or Dry

The polyester backing on 3M™ Microfinishing PSA Film Disc 675L is water resistant, allowing the disc to be used wet if desired. Adding a lubricant like water helps minimize buildup and wash away swarf, which prevents clogging and maintains a sharp, cool-running abrasive.

Pressure Sensitive Adhesive (PSA) for Easy Disc and Tool Attachment

The integrated pressure sensitive adhesive (PSA) design ensures swift, secure attachment of the disc to the tool. The PSA backing holds the disc in place during operation and removes cleanly from the backup pad (sold separately), leaving an uncontaminated surface ready for the next disc. Ideal for use with orbital and random orbital sanders, this micron-graded diamond abrasive delivers the desired finish without compromising substrate integrity.

Overall, the strength and versatility of this disc make it a great option for a range of finishing needs.

Product Specifications

Abrasive Material	Diamond
Attachment Type	PSA
Center Hole Diameter (Imperial)	0.0 NP
Center Hole Diameter (Metric)	0.0 NP
Grade	Non Pertinent
Grit	Non Pertinent
Micron Grade	30 μm
Overall Diameter (Imperial)	8.0 in
Overall Diameter (Metric)	203.2 mm
Product Form	Disc
Product Number	675L

Grade Comparison

For your convenience, below is a comparison of the diamond microfinishing film's micron grades to typical abrasive grit equivalents based on the PSI Dragon Grade Comparison chart:

Micron Grade (μm)	Grit Equivalent
9 μm	~3000 grit
20 μm	~1500 grit
30 μm	~1000 grit
45 μm	~600 grit
74 μm	~400 grit
125 μm	~200 grit

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