AS568-007 O-Ring

Inside diameter 0.145″
Cross-section 0.070″
Outside diameter 0.285″
Metric (ID × CS) 3.68 × 1.78 mm

OD is derived: ID + 2 × CS = 0.145″ + 2 × 0.070″ = 0.285″.

Neighboring sizes (CS 0.070″ series)

Dash ID OD ID mm vs -007
-005 0.101″ 0.241″ 2.57 ID −0.044″
-006 0.114″ 0.254″ 2.90 ID −0.031″
-007 0.145″ 0.285″ 3.68
-008 0.176″ 0.316″ 4.47 ID +0.031″
-009 0.208″ 0.348″ 5.28 ID +0.063″
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.