AS568-221 O-Ring
Inside diameter 1.421″
Cross-section 0.139″
Outside diameter 1.699″
Metric (ID × CS) 36.09 × 3.53 mm
OD is derived: ID + 2 × CS = 1.421″ + 2 × 0.139″ = 1.699″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -221 |
|---|---|---|---|---|
| -219 | 1.296″ | 1.574″ | 32.92 | ID −0.125″ |
| -220 | 1.359″ | 1.637″ | 34.52 | ID −0.062″ |
| -221 | 1.421″ | 1.699″ | 36.09 | — |
| -222 | 1.484″ | 1.762″ | 37.69 | ID +0.063″ |
| -223 | 1.609″ | 1.887″ | 40.87 | ID +0.188″ |