AS568-116 O-Ring

Inside diameter 0.737″
Cross-section 0.103″
Outside diameter 0.943″
Metric (ID × CS) 18.72 × 2.62 mm

OD is derived: ID + 2 × CS = 0.737″ + 2 × 0.103″ = 0.943″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -116
-114 0.612″ 0.818″ 15.54 ID −0.125″
-115 0.674″ 0.880″ 17.12 ID −0.063″
-116 0.737″ 0.943″ 18.72
-117 0.799″ 1.005″ 20.29 ID +0.062″
-118 0.862″ 1.068″ 21.89 ID +0.125″
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.