AS568-149 O-Ring

Inside diameter 2.800″
Cross-section 0.103″
Outside diameter 3.006″
Metric (ID × CS) 71.12 × 2.62 mm

OD is derived: ID + 2 × CS = 2.800″ + 2 × 0.103″ = 3.006″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -149
-147 2.675″ 2.881″ 67.94 ID −0.125″
-148 2.737″ 2.943″ 69.52 ID −0.063″
-149 2.800″ 3.006″ 71.12
-150 2.862″ 3.068″ 72.69 ID +0.062″
-151 2.987″ 3.193″ 75.87 ID +0.187″
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.