AS568-324 O-Ring

Inside diameter 1.350″
Cross-section 0.210″
Outside diameter 1.770″
Metric (ID × CS) 34.29 × 5.33 mm

OD is derived: ID + 2 × CS = 1.350″ + 2 × 0.210″ = 1.770″.

Neighboring sizes (CS 0.210″ series)

Dash ID OD ID mm vs -324
-322 1.225″ 1.645″ 31.12 ID −0.125″
-323 1.287″ 1.707″ 32.69 ID −0.063″
-324 1.350″ 1.770″ 34.29
-325 1.475″ 1.895″ 37.47 ID +0.125″
-326 1.600″ 2.020″ 40.64 ID +0.250″
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.