AS568-107 O-Ring

Inside diameter 0.206″
Cross-section 0.103″
Outside diameter 0.412″
Metric (ID × CS) 5.23 × 2.62 mm

OD is derived: ID + 2 × CS = 0.206″ + 2 × 0.103″ = 0.412″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -107
-105 0.143″ 0.349″ 3.63 ID −0.063″
-106 0.174″ 0.380″ 4.42 ID −0.032″
-107 0.206″ 0.412″ 5.23
-108 0.237″ 0.443″ 6.02 ID +0.031″
-109 0.299″ 0.505″ 7.59 ID +0.093″
Data provenance. SAE AS568, Aerospace Size Standard for O-rings (SAE International). Nominal dimensions per AS568; size tolerances vary by dash number and are not yet cataloged. Groove/gland design depends on the application — consult a gland design reference. See all data sources.