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| Bearing Number | Bore Dia | Outer DIa | Width | Size |
|---|---|---|---|---|
| 8-263 NBR90 B 184.61X190.61X1.02 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.5 Inch / 12.7 Millimeter |
| 8-366 NBR90 B 184.86X194.16X1.93 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.368 Inch / 9.347 Millimeter |
| 8-264 NBR90 B 190.96X196.96X1.02 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.276 Inch / 7 Millimeter |
| 8-364 NBR90 B 172.16X4.65X1.5 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.438 Inch / 11.125 Millimeter |
| 8-262 NBR90 B 178.26X184.26X1.02 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.25 Inch / 6.35 Millimeter |
| 8-365 NBR90 B 178.51X4.65X1.5 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.688 Inch / 17.475 Millimeter |
| 8-260 NBR90 B 165.56X171.56X1.25 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.315 Inch / 8 Millimeter |
| 8-439 NBR90 B 165.7X177.63X2.97 NBR BACKUP RING | Steel | WAVE lip | Metal case | CRWA5 |
| 8-363 NBR90 B 165.81X4.65X1.5 NBR BACKUP RING | Oil Seals | 1.682 | S02250 | - |
| 8-261 NBR90 B 171.91X177.91X1.02 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.875 Inch / 22.225 Millimeter |
| 8-361 NBR90 B 153.11X4.65X1.5 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 1 Inch / 25.4 Millimeter |
| 8-259 NBR90 B 159.2X165.2X1.25 N90 NBR BACKUP RING | Seal | 31411705 | Oil Seals | 0.394 Inch / 10 Millimeter |

