3M Microfinishing PSA Film Disc Roll 366L, 20 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 offers reliable performance with a trusted brand and model. This product is designed for professionals who need consistent results in finishing tasks.

Its premium micron-graded aluminum oxide abrasive ensures a fast cut and long life, making it a top choice in the 3M Microfinishing line. The model 366L stands out for its durability and precision.

Precise 20 Micron Thickness

With a 20 Mic 3MIL thickness, these discs provide a fine finish suitable for detailed sanding and finishing work. This precise micron grade helps achieve uniform surfaces across various materials.

The micron thickness supports flexibility and tear resistance, especially when working on contoured surfaces. It balances durability with the ability to conform to complex shapes.

Flexible Polyester Film Backing

The durable polyester film backing offers flexibility that allows consistent finishing on contoured surfaces. This backing is more tear-resistant than paper, ideal for high-production environments.

Its pressure sensitive adhesive backing makes attachment easy and secure, while allowing clean removal. The 5 in x NH size fits standard backup pads for orbital and random orbital sanders.

Convenient Roll Format

These sanding discs come in a roll format, with 125 discs per roll and 4 rolls per case. This packaging supports high-production use and reduces downtime during sanding operations.

The roll format allows quick dispensing of discs, improving workflow efficiency. The Die 500X shape is compatible with many sanding tools, making it versatile for various applications.

Open Coat Load Resistance

The open coat construction and load-resistant coating prevent dust and debris from clogging the disc. This design maintains cutting efficiency and extends the disc’s usable life.

This feature is especially useful when sanding softwoods, paints, or materials prone to clogging. It ensures an aggressive cut and reduces material waste during finishing tasks.