AS568-437 O-Ring
Inside diameter 5.975″
Cross-section 0.275″
Outside diameter 6.525″
Metric (ID × CS) 151.76 × 6.99 mm
OD is derived: ID + 2 × CS = 5.975″ + 2 × 0.275″ = 6.525″.
Neighboring sizes (CS 0.275″ series)
| Dash | ID | OD | ID mm | vs -437 |
|---|---|---|---|---|
| -435 | 5.725″ | 6.275″ | 145.41 | ID −0.250″ |
| -436 | 5.850″ | 6.400″ | 148.59 | ID −0.125″ |
| -437 | 5.975″ | 6.525″ | 151.76 | — |
| -438 | 6.225″ | 6.775″ | 158.11 | ID +0.250″ |
| -439 | 6.475″ | 7.025″ | 164.46 | ID +0.500″ |
Same ID, other cross-sections
- AS568-361 — same 5.975″ ID with a 0.210″ cross-section (OD 6.395″)