AS568-113 O-Ring

Inside diameter 0.549″
Cross-section 0.103″
Outside diameter 0.755″
Metric (ID × CS) 13.94 × 2.62 mm

OD is derived: ID + 2 × CS = 0.549″ + 2 × 0.103″ = 0.755″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -113
-111 0.424″ 0.630″ 10.77 ID −0.125″
-112 0.487″ 0.693″ 12.37 ID −0.062″
-113 0.549″ 0.755″ 13.94
-114 0.612″ 0.818″ 15.54 ID +0.063″
-115 0.674″ 0.880″ 17.12 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.