3M 372L Microfinishing Film Roll 40 Mic 38Mm X 137M

• 3M MICROFINISHING FILM 372L 40 MIC 38MM X 137M 76MM CORE
• 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

Our 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. 

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

Film Backing Provides Uniformly Flat Vehicle for Finer Finish
Film backings provide a superior, uniformly flat surface to hold abrasive particles – abrasive grains don’t compress or become pressed into the backing. Highly conformable and tear-resistant, the polyester film backing flexes to help achieve a consistent finish over contours and is stronger than comparable paper products, making it ideal for high-production environments.