3M Microfinishing PSA Film Disc Roll 366L, 100 Mic 3MIL, Type D, 5 in x NH, Die 500X, 125 Discs/Roll, 4 Rolls/Case

• Adhesive backing for easy attachment
• Durable polyester film backing provides flexibility for consistent finishing on contoured surfaces
• Load-resistant coating prevents dust and debris from clogging the disc
• Open coat construction provides aggressive cut and reduced loading
• Precision, micron-graded aluminum oxide abrasive offers a fast cut, long life, and uniform finish on many substrates
• Pressure sensitive adhesive backing allows quick attachment and clean removal for multi-step finishing processes

3M Microfinishing PSA Film Disc Roll 366L include multiple sanding discs packaged in a roll for convenience and use in high-production environments. These discs are rated Best in the 3M Microfinishing line of film backed discs.

We gave these discs premium, micron-graded aluminum oxide abrasive, which is 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, metal, or where loading is an issue. An anti-load coating and open coat surface 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 and dust free option for complete multi-step sanding and finishing.

Our 3M™ Microfinishing PSA Film Disc Roll 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.

Trusted 3M Model Quality

The 3M Microfinishing PSA Film Disc Roll 366L is a reliable choice for professionals needing consistent results. This model features a pressure sensitive adhesive backing that makes attachment quick and removal clean, ideal for multi-step finishing processes.

Designed with a durable polyester film backing, the 366L disc offers flexibility for finishing contoured surfaces without sacrificing durability. This ensures a uniform finish on various materials while maintaining ease of use.

Precise Micron Grade Abrasive

These discs use a 100 Mic 3MIL precision micron-graded aluminum oxide abrasive, known for fast cutting and long life. This abrasive self-fractures to expose fresh cutting edges, providing a consistent finish on wood, metal, and composites.

The micron grading ensures uniformity across the disc surface, making it suitable for detailed sanding tasks. This grade supports efficient sanding on a wide range of substrates, including paint prep and corrosion removal.

Optimal Size And Format

The discs come in a 5 in x NH size, which fits many orbital and random orbital sanders. This size is versatile for various sanding applications, from woodworking to metalworking, ensuring compatibility with common tools.

Packaged as a roll with 125 discs per roll and 4 rolls per case, this format supports high-production environments. The roll format simplifies storage and handling, reducing downtime during sanding jobs.

Open Coat Load Resistance

The open coat construction of the 366L discs spaces abrasive grains to reduce clogging from dust and debris. This design helps maintain aggressive cutting performance even when sanding softwoods or painted surfaces.

A load-resistant coating further prevents dust buildup, extending disc life and improving productivity. This feature is especially useful in environments where material loading can hinder sanding efficiency.

Convenient Roll Pack

Each case includes 4 rolls, with 125 discs per roll, making it easy to keep a steady supply on hand. The roll format allows quick dispensing and reduces waste compared to loose sheets or discs.

The pressure sensitive adhesive backing ensures discs stay securely attached during use and remove cleanly from backup pads. This convenience supports fast changes and consistent sanding results in busy workshops.