AS568-465 O-Ring

Inside diameter 17.955″
Cross-section 0.275″
Outside diameter 18.505″
Metric (ID × CS) 456.06 × 6.99 mm

OD is derived: ID + 2 × CS = 17.955″ + 2 × 0.275″ = 18.505″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -465
-463 16.955″ 17.505″ 430.66 ID −1.000″
-464 17.455″ 18.005″ 443.36 ID −0.500″
-465 17.955″ 18.505″ 456.06
-466 18.455″ 19.005″ 468.76 ID +0.500″
-467 18.955″ 19.505″ 481.46 ID +1.000″

Same ID, other cross-sections

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.