sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Overview
The 3um Diamond Lapping Film is a specialized abrasive sheet designed for the precise finishing and polishing of fiber optic connector end faces. Maintaining a high-quality surface finish is essential to ensure minimal signal loss and back reflection, which is particularly critical for singlemode fiber applications.
These 3" x 6" sheets are manufactured with a 3um grit size, optimized for the intermediate stages of the fiber polishing process. The film features a durable 3 mil backing with a plain, non-PSA (Pressure Sensitive Adhesive) surface, allowing for consistent performance when used with standard polishing pucks and plates. Each package includes 10 sheets, color-coded in pink for easy identification of the grit size during multi-step polishing workflows.
Key Features
-
3um Grit Size
Optimized abrasive consistency for effective connector end face material removal and surface refinement. -
3" x 6" Sheet Dimensions
Standardized size compatible with most manual and machine-based fiber optic polishing equipment. -
Plain Backing
Features a non-adhesive (No PSA) back for clean removal from polishing fixtures. -
Color-Coded Design
Pink coloring allows for immediate identification to prevent cross-contamination between different grit sizes. -
3 Mil Backing
Provides the necessary structural integrity for controlled pressure during the polishing sequence. -
10-Pack Quantity
Convenient bulk packaging for technicians and data center maintenance kits.
Applications
- Fiber optic connector end face polishing
- Singlemode and multimode fiber termination
- Connector maintenance and refurbishment
- Polishing plate/puck operations
Package Contents
- 10 x 3um Diamond Lapping Film Sheets (3" x 6")
Technical Specifications
| Specification | Value |
|---|---|
| Grit Size | 3um |
| Sheet Dimensions | 3" x 6" |
| Color | Pink |
| Adhesive Type | Plain Back (No PSA) |
| Backing Thickness | 3 mil |
| Quantity | 10 Sheets per Pack |
Frequently Asked Questions
What is the purpose of using 3um film?
3um film is typically used as an intermediate step in the fiber polishing process to refine the surface after initial coarse grinding and before final fine polishing.
Does this film have an adhesive back?
No, this product features a plain back (no PSA) for use with polishing pads or fixtures that hold the film in place mechanically.
Are other grit sizes available?
Yes, diamond lapping films are commonly available in 1um, 3um, and 30um sizes for different stages of the polishing process.
Is this suitable for machine polishing?
Yes, these sheets are compatible with most standard machine polishing equipment used in the fiber optic industry.
Can I purchase these as individual sheets?
This product is sold exclusively in packages of 10 sheets.

