3M™ Microfinishing Film Roll 372L, 20 Mic 5MIL, 12.5 in x 1860 ft (317.5mmx567m), Cardboard Core, 1 ea/Case

$6,059.26 / Roll

SKU	7100315502
Legacy SKU	60440414807
UPC	00068060665195
Product Number	372L

The 3M Microfinishing Film Roll 372L features micron-graded premium aluminum oxide bonded to a 5 mil polyester film backing to deliver uniform results and meet stringent surface requirements. A friction grip coating provides slip resistance for microfinishing machines where film slippage is an issue, and close tolerance work on cylindrical surfaces, such as automotive camshafts and crankshafts.

Micron-graded aluminum oxide abrasive cuts fast and provides a consistent, fine finish
Durable polyester film backing provides flexibility for consistent finishing on contoured surfaces
Polyester film backing can be run wet
Available in a range of grades to help operators achieve goal tolerances
Color-coded by grade for error proofing

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Durable

Superior Protection

Global Shipping

Industry Low Price

Product Dimensions	Imperial	Metric
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Shipping Dimensions
Weight	132.58301 lb
Length	20.3748 in
Width	20.3748 in
Height	15.25 in

PRODUCT FAQ

What kind of applications is the 3M™ Microfinishing Film Roll intended for?

The 3M™ Microfinishing Film Roll 372L is ideal for finishing and polishing a wide range of materials, including metal, wood, ceramics, and composites.
Can this product be used with both hand sanding and machine sanding equipment?

Yes! The 3M™ Microfinishing Film Roll can be easily used with both hand sanders and machine sanding equipment for versatile application.
How durable is the microfinishing film roll? Will it last through tough projects?

The microfinishing film roll is constructed using high-quality materials to ensure durability and longevity even on tough projects, providing consistent finishes.
Is there a specific grit size or abrasive material used in this product?

This particular microfinishing film roll has a grit size of 20 Microns (P150) which offers precise control over surface finish consistency.

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.

Predictable, Consistent, Repeatable Performance

In order to achieve an extremely consistent scratch for microfinishing, 3M utilizes micron-graded mineral that is measured at very tight size tolerances for the 3M Microfinishing Film Roll 372L. The resin bond ensures reliable and consistent performance. With a durable film backing, this abrasive helps achieve tight geometry and finish tolerances.

This microfinishing roll is available in a wide range of micron grades, allowing for reproducible surface characteristics and geometric values that adhere to specifications. In certain applications, multiple grades are used simultaneously to achieve different finishes across the surface of a single complex part. To minimize the risk of operator error, 3M has designed Type 2 film in various colors that reflect each grade. The color coding serves as a useful visual cue, along with sorting width by core size and side and end of roll printing and marking.

Film Backing Provides Uniformly Flat Vehicle for Finer Finish

Film backings provide a superior and uniformly flat surface to hold abrasive particles, preventing them from compressing or becoming pressed into the backing. The polyester film backing is highly conformable and tear-resistant, allowing it to flex and achieve a consistent finish over contours. It is also stronger than comparable paper products, making it ideal for high-production environments.

For Flawless Geometries

Manufacturers of critical automotive components cannot afford any errors when producing parts to specification. The finishes of crankshafts and camshafts, which rotate on increasingly thinner films of oil, have a significant impact on power generation, life, noise, vibration, friction, fuel efficiency, and emissions. Microfinishing can improve engine component surfaces and geometry by removing variations in the surface, minimizing friction, and manipulating metal behavior in other ways.

Recommended Applications

3M Microfinishing Films are commonly used in the production of industrial components such as custom flanges and fittings for the oil and gas industry. They are also used for superfinishing automotive parts, including crankshafts, camshafts, and transmission parts.

A Portfolio of Abrasive Systems Solutions

3M offers a wide range of abrasive solutions, from specialty abrasives designed for highly specific purposes to versatile sheets that can handle various tasks. With a wealth of original technologies and breakthrough inventions, 3M provides a broad portfolio of abrasives that shape, finish, and polish with ease and precision.

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