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Product Description
- 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
We gave these discs an anti-load coating and open coat surface to 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 for complete multi-step sanding and finishing.
Our 3M™ Microfinishing PSA Film Disc 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 366L is a reliable choice for finishing tasks. This exact model features a pressure sensitive adhesive backing that makes attachment quick and removal clean, ideal for multi-step finishing processes.
Designed for professionals, the 366L disc offers consistent performance on various surfaces. Its durable polyester film backing adds flexibility, helping maintain a uniform finish even on contoured shapes.
Precise Grade and Weight
This disc comes with an 80 Mic 3MIL grade, providing a balance of fast cutting and long life. The micron-graded aluminum oxide abrasive ensures a uniform finish across different materials.
Such precision makes it suitable for sanding wood, composites, plastics, and metals. The 80 Mic 3MIL grade supports efficient material removal without sacrificing surface quality.
Optimal Size and Format
The disc measures 5 inches in diameter and uses the NH format, fitting many orbital and random orbital sanders. This size is versatile for both detailed and broader finishing tasks.
Its Type D film backing enhances tear resistance compared to paper discs, making it durable in high-production environments. The 5 in x NH format ensures compatibility with common sanding tools.
Open Coat Load Resistance
Featuring an open coat construction, the disc resists clogging by sawdust and debris. This design allows the abrasive grains to stay sharp longer, improving cutting efficiency.
The load-resistant coating further prevents buildup, especially when sanding softwoods or painted surfaces. This combination extends disc life and maintains aggressive cutting action.
Convenient Pack Size Options
Available in packs of 50 discs per bag and 500 discs per case, this product suits both small shops and large operations. Bulk packaging helps reduce downtime by keeping supplies on hand.
The pack count supports continuous work without frequent reordering. It also offers cost savings for high-volume users needing consistent finishing performance.
3M Microfinishing PSA Film Disc 366L, 80 Mic 3MIL, Type D, 5 in x NH, Die 500X, 50/Bag, Case of 500
3M
$438.02 Per Case
