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About O-Rings
More
Oil-Resistant Buna-N Backup Rings
Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
For technical drawings and 3-D models, click on a part number.
| For Dash Number  | ID | Thick. | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
0.183" Wide | ||||||||
|---|---|---|---|---|---|---|---|---|
| 322 | 1.263" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 323 | 1.316" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 325 | 1.513" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 326 | 1.638" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 329 | 2.013" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 330 | 2.138" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 333 | 2.518" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 334 | 2.643" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 337 | 3.018" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 338 | 3.143" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 339 | 3.273" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 340 | 3.398" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 341 | 3.523" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 00000 |
| 342 | 3.648" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 343 | 3.773" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 344 | 3.898" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 345 | 4.028" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 346 | 4.153" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 349 | 4.528" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 351 | 4.778" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 358 | 5.653" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |