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3M™ Diamond Microfinishing Film PSA Disc 675L

  • Micron-graded diamond mineral delivers close tolerance precision finishes
  • Great for medium stock removal
  • May be run wet or dry
  • Color-coded by grade to reduce risk for error
View all details
Overall Diameter (Imperial)
Micron Grade
Products Available
Available options:
 Overall Diameter (Imperial), Max RPM and Micron Grade
All Options
Attribute Name
Abrasive Material
Finishing, Grinding, Polishing
Attachment Type
Backing Material
Polyester Film
Backing Thickness (Imperial)
5 mil
Color Family
Beige, Green, Multi-color, Orange
Equipment - Machines
Lapping Machines, Manual Backstand
Form Type
Aerospace, General Industrial, Precision Grinding & Finishing, Transportation & Heavy Equipment
12000, 2500
Micron Grade
125 μm, 20 μm, 45 μm, 74 μm, 9 μm
Overall Diameter (Imperial)
12 in, 5 in
Overall Diameter (Metric)
127 mm, 304.8 mm
Primary Application
Woodworking, Composite & Advanced Materials
Product Color
Beige, Gray, Orange, Teal, Yellow
Product Form
Product Type
Carbide, Cast Iron, Ceramic, Chilled Cast Iron, Chrome Carbide, Chrome Oxide, Granite, High Nickel Alloy, HVOF, Nickel Based, Non-ferrous Metals, Oxides, Soft Metals, Stone, Tungsten Carbide
Product Details
  • Micron-graded diamond mineral delivers close tolerance precision finishes
  • Great for medium stock removal
  • May be run wet or dry
  • Color-coded by grade to reduce risk for error
  • Available in a range of grades, so operators can choose the right disc for their unique application

Designed with a strong polyester film backing and sharp diamond mineral, 3M™ Diamond Microfinishing Film 675L delivers fine finishes on hard metals, thermal spray coating, ceramics, carbides, chilled iron and granite.

3M™ Diamond Microfinishing Film PSA Disc 675L
Because of its unique construction, 675L film helps you achieve fast finish reduction in fewer passes.
Diamond Mineral: Sharp Cut, Fine Finishes
Our 3M™ Diamond Microfinishing Film PSA Disc 675L was designed for and 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.

Diamond cuts well when moderate to medium pressure is applied. It offers an efficient alternative in most applications except those requiring the finest possible finishes. Altogether, diamond mineral renders this disc a great option for tough coating and hard to grind material removal.

Disc 675L is available in grades 125 and 74 micron to refine thermal sprayed surfaces and 45, 30, 20 and 9 micron for finer finishes. We offer the disc in a range of grades, so operators can choose a disc that's tailored to their unique project needs.

Polyester-Backed Abrasive May Be Run Wet or Dry
The polyester backing on 3M™ Microfinishing PSA Film Disc 675L is water resistant, so the disc may be run wet if desired. Adding a lubricant like water can help minimize build up and wash away swarf, which prevents the abrasive from getting clogged; it helps keep the abrasive cut sharp and run cool.

Pressure Sensitive Adhesive (PSA) for Easy Disc and Tool Attachment
We included pressure sensitive adhesive (PSA) in the design of 675L, so disc to tool attachment would be swift and easy. The PSA backing holds the disc securely in place during use, and removes cleanly from the backup pad (sold separately), leaving an uncontaminated surface for the next disc. It's designed for use with orbital and random orbital sanders.

Overall, this micron-graded diamond abrasive delivers the desired finish without compromising the integrity of the substrate. Its strength and versatility make it a great disc for your finishing needs.

Customer Reviews
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Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.

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