AS568-147 O-Ring

Inside diameter 2.675″
Cross-section 0.103″
Outside diameter 2.881″
Metric (ID × CS) 67.94 × 2.62 mm

OD is derived: ID + 2 × CS = 2.675″ + 2 × 0.103″ = 2.881″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -147
-145 2.550″ 2.756″ 64.77 ID −0.125″
-146 2.612″ 2.818″ 66.34 ID −0.063″
-147 2.675″ 2.881″ 67.94
-148 2.737″ 2.943″ 69.52 ID +0.062″
-149 2.800″ 3.006″ 71.12 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.