AS568-450 O-Ring

Inside diameter 10.475″
Cross-section 0.275″
Outside diameter 11.025″
Metric (ID × CS) 266.06 × 6.99 mm

OD is derived: ID + 2 × CS = 10.475″ + 2 × 0.275″ = 11.025″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -450
-448 9.475″ 10.025″ 240.66 ID −1.000″
-449 9.975″ 10.525″ 253.36 ID −0.500″
-450 10.475″ 11.025″ 266.06
-451 10.975″ 11.525″ 278.76 ID +0.500″
-452 11.475″ 12.025″ 291.46 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.