3M™ Microfinishing Film Belt 272L

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Durable 5 mil film backing won’t deflect when run, so it can stand up to contours
Micron graded aluminum oxide mineral cuts sharp but won’t gouge or mar the substrate
Features a closed coat construction for finish consistency
Excellent choice for applications requiring fine finishes

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For industrial/occupational use only. Not for consumer sale or use.

Overall Width (Imperial)

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Overall Length (Imperial)

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Micron Grade

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12 Products Available

Available options:

Overall Width (Imperial), Overall Length (Imperial) and Micron Grade

Specifications

Attribute Name	Value
Abrasive Material	Aluminum Oxide
Application	Finishing, Polishing
Backing Material	Film
Backing Thickness (Imperial)	5 mil
Backing Thickness (Metric)	0.025 mm
Brand	3M™
Coat Type	Closed Coat
Color Family	Black, Blue, Green, Orange, Red
Equipment - Machines	Wide Belt Sanders
For Use On	Composites, Glass, Paint, Plastics
Industries	Composite, General Industrial, Metalworking, Primary Metal, Woodworking
Micron Grade	100 μm, 15 μm, 20 μm, 30 μm, 40 μm, 60 μm, 80 μm
Overall Length (Imperial)	168 in, 40 in, 60 in, 75 in
Overall Length (Metric)	1016 mm, 1524 mm, 1905 mm, 4267.2 mm
Overall Width (Imperial)	3 in, 37 in, 4 in, 52 in
Overall Width (Metric)	101.6 mm, 1320.8 mm, 76.2 mm, 939.8 mm
Product Color	Black, Blue, Green, Orange, Red
Product Form	Belt
Size (Imperial)	3 in x 168 in, 37 in x 60 in, 37 in x 75 in, 4 in x 40 in, 52 in x 75 in
Size (Metric)	101.6 mm x 1016 mm, 1320.8 mm x 1905 mm, 76.2 mm x 4267.2 mm, 939.8 mm x 1524 mm, 939.8 mm x 1905 mm
Substrate	Composite, Glass, Paint, Plastic

Product Details

Durable 5 mil film backing won’t deflect when run, so it can stand up to contours
Micron graded aluminum oxide mineral cuts sharp but won’t gouge or mar the substrate
Features a closed coat construction for finish consistency
Excellent choice for applications requiring fine finishes
Available in a versatile range of grades, so operators can select the right grade for their application

Our 3M™ Microfinishing Film Belt 272L was designed to deliver close tolerance precision finishes on a versatile range of substrates – from gelcoat and soft rubber to fiberglass and metals.

The 5-mil polyester film backing offers stretch resistance, high unit pressure on the material, compatibility with most coolants and suitability for a wide variety of wet and dry applications.

Aluminum Oxide Mineral
We design 3M™ Microfinishing Film Belt 272L by anchoring aluminum oxide mineral to a polyester film backing with resin. This belt is uniquely suited to help with sheet polishing, finishing, and flat finishing.

We chose aluminum oxide mineral for this abrasive belt, as it is a popular choice among industrial professionals who favor the fast cut rate and long life. Aluminum oxide's hardness, strength and low heat retention help the belt withstand the repeated wear that grinding and finishing often demand.

Features a Water-Resistant Polyester Backing
The polyester film backing on 3M™ Microfinishing Film Belt 272L is water resistant, so the belt can be run wet or dry. By applying a lubricant, like water, as the abrasive runs, operators may be able to wash away swarf and debris that tend to clog the abrasive or warp and discolor the substrate. The resin bond that fastens aluminum oxide to the backing helps the abrasive stay cool, because it breaks down gradually as the belt rotates.

Available in a Range of Grades
Given that it's available in a versatile range of grades — from 9 to 100 micron — operators can select the right grade of 3M™ Microfinishing Film Belt 272L for their unique application. Higher grades, like 100 micron, are good for higher removal processes, while lower grades, like 9, are good for final, fine finishes.

Altogether, this film-backed belt enables you to quickly d achieve desired Ra (roughness average) and other surface finish parameters. These are some of the reasons why this belt is used across industries — from metalworking to woodworking.

Resources

Flyers

3M™ Microfinishing Film Product Portfolio Flyer PDF (PDF, 347.7KB)

Safety Inserts

3M™ Coated Abrasive Belts and Scotch-Brite™ Surface Conditioning Belts (PDF, 483.6KB)

Customer Reviews

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For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.