AS568-126 O-Ring

Inside diameter 1.362″
Cross-section 0.103″
Outside diameter 1.568″
Metric (ID × CS) 34.59 × 2.62 mm

OD is derived: ID + 2 × CS = 1.362″ + 2 × 0.103″ = 1.568″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -126
-124 1.237″ 1.443″ 31.42 ID −0.125″
-125 1.299″ 1.505″ 32.99 ID −0.063″
-126 1.362″ 1.568″ 34.59
-127 1.424″ 1.630″ 36.17 ID +0.062″
-128 1.487″ 1.693″ 37.77 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.