AS568-464 O-Ring

Inside diameter 17.455″
Cross-section 0.275″
Outside diameter 18.005″
Metric (ID × CS) 443.36 × 6.99 mm

OD is derived: ID + 2 × CS = 17.455″ + 2 × 0.275″ = 18.005″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -464
-462 16.455″ 17.005″ 417.96 ID −1.000″
-463 16.955″ 17.505″ 430.66 ID −0.500″
-464 17.455″ 18.005″ 443.36
-465 17.955″ 18.505″ 456.06 ID +0.500″
-466 18.455″ 19.005″ 468.76 ID +1.000″
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.