Rings

OD   Outer diameter
ID     Inner diameter
TH    Thickness
P      Polarization direction

Outer Diameter OD
2 to 80 mm
Inner Diameter ID
0.8 to 74 mm
Thickness TH
0.15 to 30 mm
Electrodes
Silver (thick film) or PVD thin film (CuNi, Au, etc.)

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