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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.
3M Microfinishing PSA Benefits
The 3M Microfinishing PSA Film Disc 366L offers a pressure sensitive adhesive backing that makes attachment quick and removal clean. This feature is essential for multi-step finishing processes, ensuring the disc stays securely in place during use.
Designed with a durable polyester film backing, this 5 in x NH disc flexes to provide consistent finishing on contoured surfaces. The adhesive backing also allows easy repositioning without residue, ideal for high-production environments.
Precise Grade And Format
This product features a 40 Mic 3MIL grade, which refers to the micron thickness and abrasive size, delivering a fast cut and uniform finish. The Type D format ensures compatibility with various orbital and random orbital sanders.
The disc's die 500X format and 5 inch size make it suitable for detailed sanding tasks, while the micron-graded aluminum oxide abrasive supports long life and consistent performance across many substrates.
Durable Backing And Coating
The polyester film backing provides flexibility and tear resistance, outperforming paper-backed alternatives. This durability helps maintain consistent finishing results even on contoured or irregular surfaces.
Additionally, the load-resistant coating prevents dust and debris from clogging the disc, which extends the product life and maintains cutting efficiency during sanding of softwoods, paints, and other materials.
Open Coat Construction Advantage
Open coat construction spaces abrasive grains apart to reduce clogging and improve dust evacuation. This design results in a more aggressive cut compared to closed coat abrasives of the same grade.
The open coat also enhances productivity by minimizing loading, allowing the disc to cut better and last longer when sanding various materials, including wood, composites, and metals.
Pack Size And Compatibility
This product is sold in packs of 50 discs per bag and 500 discs per case, providing ample supply for industrial or professional use. The pack count supports efficient inventory management and reduces downtime.
The 3M Microfinishing PSA Film Disc 366L fits backup pads sized for 5 inch discs and is compatible with orbital and random orbital sanders, making it versatile for many finishing applications.
3M Microfinishing PSA Film Disc 366L, 40 Mic 3MIL, Type D, 5 in x NH, Die 500X, 50/Bag, Case of 500
3M
$438.02 Per Case
