AS568-469 O-Ring

Inside diameter 19.955″
Cross-section 0.275″
Outside diameter 20.505″
Metric (ID × CS) 506.86 × 6.99 mm

OD is derived: ID + 2 × CS = 19.955″ + 2 × 0.275″ = 20.505″.

Neighboring sizes (CS 0.275″ series)

Dash ID OD ID mm vs -469
-467 18.955″ 19.505″ 481.46 ID −1.000″
-468 19.455″ 20.005″ 494.16 ID −0.500″
-469 19.955″ 20.505″ 506.86
-470 20.955″ 21.505″ 532.26 ID +1.000″
-471 21.955″ 22.505″ 557.66 ID +2.000″

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.