3M™ Diamond Lapping Film Sheet 669X
The 3M™ Diamond Lapping Film Sheet 669X is engineered for precision finishing and polishing of hard materials. Featuring diamond abrasive grains on a 3 mil polyester film, it delivers consistent surface quality with excellent durability. Designed for wet use, this film ensures smooth, repeatable results on metals, ceramics, glass, and composites.
3M Diamond Lapping Film Sheet 669X Features:
- Diamond abrasive grain for high-precision finishing
- 3 mil polyester backing ensures stability and control
- Resin-bonded slurry for long-lasting durability
- Consistent and reproducible surface quality
- Designed for wet polishing processes
3M Diamond Lapping Film Sheet 669X Applications:
- Polishing and lapping hard metals and coatings
- Finishing ceramics and glass
- Optical and precision component finishing
- Tool and die polishing operations
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 | Metalworking, Polishing, Superfinishing, Surface Finishing, AOEM Finish Prep/Repair, Aerospace, Automotive, Electronics, Fiber Optic Connector Polishing, Flat Lapping, Hand Sanding |
| Backing Material | Polyester Film |
| Backing Thickness (Imperial) | 3 mil |
| Bond Type | Resin |
| Brands | 3M |
| Coat Type | Closed Coat |
| Equipment - Machines | Hand Sanding, Lapping Machines, Manual Backstand, Orbital Sanders, Oscillating Machines, Sanding Blocks |
| Industries | Metalworking, AOEM, Aerospace, Paint Preparation, Precision Grinding & Finishing |
| Micron Grade | 30 μm, 45 μm, 60 μm |
| Product Color | Dark Green, Gray |
| Product Form | Sheet |
| Sub Applications | AOEM Finish Prep/Repair, Coating Finish Prep/Repair, Defect Removal, Finishing, Flat Finishing, Optics, Flat Lapping, Superfinishing |
| Sub Industries | Aerospace, Automotive, Metal Fabrication, Plating & Polishing |
| Vacuum Support | No |
| Wet or Dry | Wet |
