O-Ring: 331, 2 1/4 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 90 Shore A
Item: 1WMB1, MFR: 1WMB1, Brand: GRAINGER APPROVED
| Dash Number | 331 |
| System of Measurement | Inch |
| Cross Section Shape | Round |
| O-Ring Material | FEP with Viton Core |
| Durometer | 90 Shore A |
| Color | Clear with Black Core |
| Nominal Inside Dia. | 2-1/4 in |
| Actual Inside Dia. | 2.225 in |
| Nominal Outside Dia. | 2-5/8 in |
| Actual Outside Dia. | 2.645 in |
| Nominal Width | 3/16 in |
| Actual Width | 0.21 in |
| Durometer (Hardness) Rating | Very Hard |
| FDA Approved | Yes |
| Metal Detectable | No |
| X-Ray Detectable | No |