AS568-143 O-Ring

Inside diameter 2.425″
Cross-section 0.103″
Outside diameter 2.631″
Metric (ID × CS) 61.59 × 2.62 mm

OD is derived: ID + 2 × CS = 2.425″ + 2 × 0.103″ = 2.631″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -143
-141 2.300″ 2.506″ 58.42 ID −0.125″
-142 2.362″ 2.568″ 59.99 ID −0.063″
-143 2.425″ 2.631″ 61.59
-144 2.487″ 2.693″ 63.17 ID +0.062″
-145 2.550″ 2.756″ 64.77 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.