3M Microfinishing PSA Film Disc Roll 366L, 60 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.

3M Microfinishing PSA Film

The 3M Microfinishing PSA Film Disc Roll 366L offers a premium sanding solution with pressure sensitive adhesive backing for easy attachment. This exact model, 366L, is designed to provide fast, reliable finishing with a durable polyester film backing that flexes to fit contoured surfaces.

These discs come in a roll format, making them convenient for high-production environments. The adhesive backing ensures quick attachment and clean removal, supporting multi-step finishing processes without hassle.

Precision Micron-Graded Abrasive

This product features a 60 Mic 3MIL grade, using precision micron-graded aluminum oxide abrasive. This abrasive is known for its fast cut-rate and long life, delivering a uniform finish on various substrates including wood, metal, and composites.

The 60 Mic grade is ideal for both sanding and grinding applications, making it suitable for professionals working with ferrous alloys and other materials requiring a tough, durable abrasive.

Flexible Durable Polyester Backing

The 5 in x NH discs use a durable polyester film backing that provides flexibility and tear resistance. This backing supports consistent finishing on contoured surfaces while maintaining durability under high heat and pressure.

Compared to paper-backed alternatives, this polyester backing enhances product life and performance, making it well-suited for demanding industrial sanding tasks.

Open Coat Load-Resistant Construction

These discs feature an open coat construction combined with a load-resistant coating to prevent dust and debris from clogging the abrasive surface. This design ensures aggressive cutting and reduces loading, which improves sanding efficiency.

The open coat layout spaces abrasive grains to evacuate sawdust effectively, allowing the disc to maintain cutting performance even on softwoods, paints, and other clog-prone materials.

Roll Format Pack Count

The 3M Microfinishing PSA Film Disc Roll 366L comes in a pack of 125 discs per roll, with 4 rolls per case. This pack size supports continuous use in production settings without frequent reordering.

The roll format keeps discs organized and ready for use, fitting well with orbital and random orbital sanders, and ensuring smooth workflow in busy workshops.