AS568-022 O-Ring

Inside diameter 0.989″
Cross-section 0.070″
Outside diameter 1.129″
Metric (ID × CS) 25.12 × 1.78 mm

OD is derived: ID + 2 × CS = 0.989″ + 2 × 0.070″ = 1.129″.

Neighboring sizes (CS 0.070″ series)

Dash ID OD ID mm vs -022
-020 0.864″ 1.004″ 21.95 ID −0.125″
-021 0.926″ 1.066″ 23.52 ID −0.063″
-022 0.989″ 1.129″ 25.12
-023 1.051″ 1.191″ 26.70 ID +0.062″
-024 1.114″ 1.254″ 28.30 ID +0.125″
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.