Product Introduction – 3M™ Microfinishing Film Sheet 372L
The 3M™ Microfinishing Film Sheet 372L delivers precise, close-tolerance finishing on metal, plastic, and automotive components. Micron-graded aluminum oxide abrasive ensures consistent material removal, while the high-friction polyester backing resists slipping during use. Sheets can be easily cut or shaped for hand sanding or pad-mounted applications.
3M™ Microfinishing Film Sheet 372L Features:
- Micron-graded aluminum oxide for precision finishing
- High-friction polyester backing prevents slippage
- Durable resin bond ensures consistent stock removal
- Cut-to-shape flexibility for customized use
- Suitable for metals, plastics, paint, and automotive parts
3M™ Microfinishing Film Sheet 372L Applications:
- Metalworking and powertrain component finishing
- Automotive spot repair and paint refinement
- Hand sanding and microfinishing
- Close-tolerance finishing where uniformity is critical
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 | Polishing, Finishing |
| Backing Material | Polyester Film |
| Backing Thickness (Imperial) | 5 mil |
| Bond Type | Resin |
| Brands | 3M |
| Equipment – Machines | Centerless Grinders, Manual Backstand, Superfinishing Machines, Microfinishing Machines, Cylindrical Grinders, Wide Belt Sanders |
| Industries | Composite, General Industrial, Aerospace, Primary Metal, Transportation & Heavy Equipment, Precision Grinding & Finishing, AOEM |
| Micron Grade | 9 μm, 15 μm, 20 μm, 30 μm, 40 μm, 80 μm, 100 μm |
| Product Color | Red, Orange, Green, Light Blue, Purple, Blue, Black |
| Product Form | Sheet |
| Sub Applications | Plate Polishing, Superfinishing, Powertrain Microfinishing |



