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3M™ Microfinishing PSA Film Disc 366L

20  Products
  • Precision, micron-graded aluminum oxide abrasive offers a fast cut, long life, and uniform finish on many substrates
  • Durable polyester film backing provides flexibility for consistent finishing on contoured surfaces
  • Pressure sensitive adhesive backing allows quick attachment and clean removal for multi-step finishing processes
  • Open coat construction provides aggressive cut and reduced loading
 More...
Overall Diameter (Imperial)
Overall_Diameter_Imperial
Max RPM
Max_RPM
Micron Grade
Micron_Grade
20 Products Available
Available options:
 Overall Diameter (Imperial), Max RPM and Micron Grade
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Specifications
Attribute Name
Value
Application
Finishing, Sanding
Application Category
Orbital Sanding
Attachment Type
PSA
Backing Material
Polyester Film
Backing Weight
3MIL
Brand
3M™
Coat Type
Open Coat
Color
Blue, Green, Orange, Purple, Red, Blue, Green, Maroon, Orange, Purple, Red
Equipment - Machines
Random Orbital Sanders
For Use On
Carbon Steel, Composites, Gelcoat, Hardwood, Metal, Paint, Primer, Softwood, Solid Surface, Topcoats, Wood
Industries
AOEM, Composite, Marine, Paint Preparation, Woodworking
Max RPM
10000, 12000
Micron Grade
100 μm, 120 μm, 15 μm, 180 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm
Mineral Type
Aluminum Oxide
Overall Diameter (Imperial)
5 in, 6 in
Overall Diameter (Metric)
127 mm, 152.4 mm, 127 mm, 152.4 mm
Position
Best
Primary Application
Paint Prep, Coating & Corrosion Removal
Product Form
Disc
Sub Industries
Cabinetry, Custom Woodworking and Millwork, Furniture, Primary Wood and Panel Processing
Substrate
Carbon Steel, Composites, Gelcoat, Hardwood, Metal, Paint, Primer, Softwood, Solid Surface, Topcoats, Wood
Product Details
  • Precision, micron-graded aluminum oxide abrasive offers a fast cut, long life, and uniform finish on many substrates
  • Durable polyester film backing provides flexibility for consistent finishing on contoured surfaces
  • Pressure sensitive adhesive backing allows quick attachment and clean removal for multi-step finishing processes
  • Open coat construction provides aggressive cut and reduced loading
  • Load-resistant coating prevents dust and debris from clogging the disc
  • Adhesive backing for easy attachment

3M™ Microfinishing PSA Film Type D Disc 366L is rated Best in the 3M Microfinishing line of film backed discs. It features micron-graded aluminum oxide abrasive bonded to a durable polyester film backing to produce a fast cut-rate and uniform finish on wood, solid surface composites, plastic, fiberglass, paint prep, coating and corrosion removal, primer, e-coat, or metal.

3M™ Microfinishing PSA Film Type D Disc 366L
Load-resistant coating provides greater efficiency and longer product life
Open Coat Construction Provides Aggressive Cut and Reduced Loading
We gave these discs an anti-load coating and open coat surface to increase efficiency and product life by minimizing loading. The abrasive is resin-bonded and supports disc flexibility without sacrificing durability and reliable performance under high heat and pressure. To compliment the effective abrasive action, the polyester film backing flexes to help achieve a consistent finish over contours and offers greater tear-resistance than comparable paper products, making it ideal for high-production environments. And the pressure sensitive adhesive (PSA) provides easy attachment, holds the disc securely in place during use, and removes cleanly from the backup pad (sold separately). Designed for use with orbital and random orbital sanders, this disc comes in a range of micron grades for complete multi-step sanding and finishing.
 
3M™ Microfinishing PSA Film Type D Disc 366L features micron-graded aluminum oxide abrasive bonded to a durable polyester film backing to produce a fast cut-rate and uniform finish on wood, solid surface composites, plastic, fiberglass, paint prep, coating and corrosion removal, primer, e-coat, or metal.
Polyester film backing provides an aggressive cut with uniform finish
Precision, Micron-Graded Aluminum Oxide Abrasive Offers a Fast Cut, Long Life, and Uniform Finish
Our 3M™ Microfinishing PSA Film Disc 366L features precision, micron-graded aluminum oxide, which is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys.

Sanding discs cut better and last longer when dust isn't clogging the cutting surface of the abrasives. Open coat construction means the abrasive grains are placed with space between them to help evacuate sawdust and other sanding debris and avoid clogging the cutting edge of the grains. The load-resistant coating also allows the disc to continue cutting even when sanding softwoods, paints, and other materials that would, otherwise, clog the disc and hinder sanding ability. Additionally, the open coat feature provides a more aggressive cut than a comparable closed coat abrasive of the same grade. All of this adds up to increased productivity and reduced material consumption.

Our 3M™ sanding discs come in a variety of forms to fit various power tools and disc pads. These high-quality abrasive products come ready to use with a pressure sensitive adhesive coating on the backside so they conveniently press on to a backup pad or hand pad, and remove cleanly, leaving an uncontaminated surface for the next sheet or disc.

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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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