AS568-452 O-Ring

Inside diameter 11.475″
Cross-section 0.275″
Outside diameter 12.025″
Metric (ID × CS) 291.46 × 6.99 mm

OD is derived: ID + 2 × CS = 11.475″ + 2 × 0.275″ = 12.025″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -452
-450 10.475″ 11.025″ 266.06 ID −1.000″
-451 10.975″ 11.525″ 278.76 ID −0.500″
-452 11.475″ 12.025″ 291.46
-453 11.975″ 12.525″ 304.16 ID +0.500″
-454 12.475″ 13.025″ 316.86 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.