AS568-240 O-Ring
Inside diameter 3.734″
Cross-section 0.139″
Outside diameter 4.012″
Metric (ID × CS) 94.84 × 3.53 mm
OD is derived: ID + 2 × CS = 3.734″ + 2 × 0.139″ = 4.012″.
Neighboring sizes (CS 0.139″ series)
| Dash | ID | OD | ID mm | vs -240 |
|---|---|---|---|---|
| -238 | 3.484″ | 3.762″ | 88.49 | ID −0.250″ |
| -239 | 3.609″ | 3.887″ | 91.67 | ID −0.125″ |
| -240 | 3.734″ | 4.012″ | 94.84 | — |
| -241 | 3.859″ | 4.137″ | 98.02 | ID +0.125″ |
| -242 | 3.984″ | 4.262″ | 101.19 | ID +0.250″ |