AS568-041 O-Ring

Inside diameter 2.989″
Cross-section 0.070″
Outside diameter 3.129″
Metric (ID × CS) 75.92 × 1.78 mm

OD is derived: ID + 2 × CS = 2.989″ + 2 × 0.070″ = 3.129″.

Neighboring sizes (CS 0.070″ series)

Dash ID OD ID mm vs -041
-039 2.739″ 2.879″ 69.57 ID −0.250″
-040 2.864″ 3.004″ 72.75 ID −0.125″
-041 2.989″ 3.129″ 75.92
-042 3.239″ 3.379″ 82.27 ID +0.250″
-043 3.489″ 3.629″ 88.62 ID +0.500″
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.