AS568-104 O-Ring

Inside diameter 0.112″
Cross-section 0.103″
Outside diameter 0.318″
Metric (ID × CS) 2.84 × 2.62 mm

OD is derived: ID + 2 × CS = 0.112″ + 2 × 0.103″ = 0.318″.

Neighboring sizes (CS 0.103″ series)

Dash ID OD ID mm vs -104
-102 0.049″ 0.255″ 1.24 ID −0.063″
-103 0.081″ 0.287″ 2.06 ID −0.031″
-104 0.112″ 0.318″ 2.84
-105 0.143″ 0.349″ 3.63 ID +0.031″
-106 0.174″ 0.380″ 4.42 ID +0.062″
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.