Product Introduction
The 3M™ Microfinishing Film Sheet 373L delivers uniform, close-tolerance finishes using micron-graded aluminum oxide resin-bonded to a tough polyester film. Its backing is durable and flexible for wet or dry sanding, making it suitable for producing high-quality finishes on a variety of materials.
3M™ Microfinishing Film Sheet 373L Features:
- Strong polyester film backing suitable for wet applications
- Anti-slip friction coating prevents slippage
- Precision, micron-graded aluminum oxide abrasive
- Available in a range of grades for different finish requirements
3M™ Microfinishing Film Sheet 373L Applications:
- Finishing all types of metals
- Working on soft or hard rubber, plastics, and composites
- Delivering uniform, close-tolerance finishes
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Typical Properties
| Property | Value |
|---|---|
| Abrasive Material | Aluminum Oxide |
| Application | Finishing |
| Backing Material | Polyester Film |
| Backing Thickness (Imperial) | 5 mil |
| Bond Type | Resin |
| Brands | 3M |
| Coat Type | Open Coat |
| Equipment – Machines | Microfinishing Machines, Superfinishing Machines |
| Industries | Primary Metal, AOEM, General Industrial, Transportation & Heavy Equipment, Aerospace |
| Micron Grade | 60 μm |
| Product Color | Black |
| Product Form | Sheet |
| Sub Applications | Superfinishing, Fine Finishing, Powertrain Microfinishing |
| Wet or Dry | Wet or Dry |



