AS568-044 O-Ring

Inside diameter 3.739″
Cross-section 0.070″
Outside diameter 3.879″
Metric (ID × CS) 94.97 × 1.78 mm

OD is derived: ID + 2 × CS = 3.739″ + 2 × 0.070″ = 3.879″.

Neighboring sizes (CS 0.070″ series)

Dash ID OD ID mm vs -044
-042 3.239″ 3.379″ 82.27 ID −0.500″
-043 3.489″ 3.629″ 88.62 ID −0.250″
-044 3.739″ 3.879″ 94.97
-045 3.989″ 4.129″ 101.32 ID +0.250″
-046 4.239″ 4.379″ 107.67 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.