Product Name

Alumina (Al₂O₃) Polishing Film / Lapping Film for Fiber Optic   Connectors

Material

Polyester film substrate + sintered alumina abrasive grains

Abrasive Type

Monocrystalline / Polycrystalline Alumina (Al₂O₃)

Backing

Pressure-sensitive adhesive (PSA) / Non-adhesive

Color

Typically gray, white, or light pink (varies by grit)

Standard Size

4 in (101.6 mm), 5 in (127 mm), 8 in (203.2 mm), 12 in (304.8   mm) (round sheets); custom roll/sheet sizes available

Thickness

Total thickness: 50–150 μm (substrate + abrasive layer)