Product Introduction
3M™ Diamond Microfinishing Film Sheet 669L offers superior surface finishing and durability. Built on a 4 mil extruded PES film with synthetic diamond abrasives, it provides precision in removal, deburring, and polishing of hard materials. Electrostatic alignment of the abrasive grains ensures consistent results, while the flexible film backing offers excellent handling for demanding applications.
3M™ Diamond Microfinishing Film Sheet 669L Features:
- Synthetic diamond abrasive grains for precision finishing.
- Full resin bond for strength and durability.
- 4 mil flexible PES film backing.
- No non-slip coating for enhanced flexibility.
- Electrostatically aligned abrasive grains.
- Available in 15, 30, 45, and 60 micron grain sizes.
3M™ Diamond Microfinishing Film Sheet 669L Applications:
- Removal, deburring, finishing, and polishing processes.
- Ideal for extremely hard materials.
- Used where superior surface quality is required.
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Abrasive Material | Diamond |
| Application | Finishing, Surface Finishing, Automotive, Coating Removal, Fine Finishing |
| Backing Material | Polyester Film |
| Backing Thickness (Imperial) | 4 mil |
| Brands | 3M |
| Coat Type | Open Coat |
| Equipment - Machines | Hand Sanding, Sanding Blocks |
| Industries | AOEM, Aerospace, Primary Metal |
| Micron Grade | 15 μm, 30 μm, 45 μm, 60 μm |
| Product Color | Dark Gray |
| Product Form | Sheet |
| Sub Applications | Coating Finish Prep/Repair, Coating Removal, Fine Finishing, Finishing, Flat Finishing |
| Sub Industries | Turbine Engines, Coating Sanding, Aerospace, Automotive, Plating & Polishing |
| Vacuum Support | No |
| Wet or Dry | Wet |
