AS568-456 O-Ring

Inside diameter 13.475″
Cross-section 0.275″
Outside diameter 14.025″
Metric (ID × CS) 342.26 × 6.99 mm

OD is derived: ID + 2 × CS = 13.475″ + 2 × 0.275″ = 14.025″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -456
-454 12.475″ 13.025″ 316.86 ID −1.000″
-455 12.975″ 13.525″ 329.56 ID −0.500″
-456 13.475″ 14.025″ 342.26
-457 13.975″ 14.525″ 354.96 ID +0.500″
-458 14.475″ 15.025″ 367.66 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.