AS568-387 O-Ring
Inside diameter 17.955″
Cross-section 0.210″
Outside diameter 18.375″
Metric (ID × CS) 456.06 × 5.33 mm
OD is derived: ID + 2 × CS = 17.955″ + 2 × 0.210″ = 18.375″.
Neighboring sizes (CS 0.210″ series)
| Dash | ID | OD | ID mm | vs -387 |
|---|---|---|---|---|
| -385 | 15.955″ | 16.375″ | 405.26 | ID −2.000″ |
| -386 | 16.955″ | 17.375″ | 430.66 | ID −1.000″ |
| -387 | 17.955″ | 18.375″ | 456.06 | — |
| -388 | 18.955″ | 19.375″ | 481.46 | ID +1.000″ |
| -389 | 19.955″ | 20.375″ | 506.86 | ID +2.000″ |
Same ID, other cross-sections
- AS568-284 — same 17.955″ ID with a 0.139″ cross-section (OD 18.233″)
- AS568-465 — same 17.955″ ID with a 0.275″ cross-section (OD 18.505″)