About O-Rings
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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 | OD | Thick. | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
0.053" Wide | |||||||||
|---|---|---|---|---|---|---|---|---|---|
004 | 0.096" | 0.202" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 005 | 0.127" | 0.233" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 006 | 0.140" | 0.246" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 007 | 0.171" | 0.277" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 008 | 0.202" | 0.308" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 009 | 0.234" | 0.340" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 010 | 0.265" | 0.371" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 011 | 0.327" | 0.433" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 012 | 0.390" | 0.496" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 013 | 0.455" | 0.561" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 014 | 0.518" | 0.624" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 015 | 0.580" | 0.686" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 016 | 0.643" | 0.749" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 017 | 0.705" | 0.811" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 018 | 0.768" | 0.874" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 019 | 0.830" | 0.936" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 020 | 0.893" | 0.999" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 021 | 0.955" | 1.061" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 022 | 1.018" | 1.124" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 024 | 1.143" | 1.249" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 025 | 1.205" | 1.311" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 026 | 1.268" | 1.374" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 028 | 1.393" | 1.499" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 029 | 1.518" | 1.624" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 031 | 1.768" | 1.874" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 042 | 3.268" | 3.374" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
0.086" Wide | |||||||||
| 103 | 0.109" | 0.281" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 109 | 0.327" | 0.499" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 110 | 0.390" | 0.562" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 111 | 0.452" | 0.624" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 112 | 0.515" | 0.687" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 113 | 0.577" | 0.749" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 114 | 0.640" | 0.812" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 115 | 0.702" | 0.874" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 116 | 0.765" | 0.937" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 117 | 0.831" | 1.003" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 118 | 0.893" | 1.065" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 119 | 0.956" | 1.128" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 120 | 1.018" | 1.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 121 | 1.081" | 1.253" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 124 | 1.268" | 1.440" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 125 | 1.331" | 1.503" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 126 | 1.393" | 1.565" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 128 | 1.518" | 1.690" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 130 | 1.643" | 1.815" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 131 | 1.706" | 1.878" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 132 | 1.768" | 1.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 134 | 1.893" | 2.065" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 135 | 1.956" | 2.128" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 136 | 2.018" | 2.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 137 | 2.081" | 2.253" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 141 | 2.331" | 2.503" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 152 | 3.268" | 3.440" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 154 | 3.768" | 3.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 155 | 4.018" | 4.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 158 | 4.768" | 4.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.118" Wide | |||||||||
| 202 | 0.265" | 0.501" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 203 | 0.327" | 0.563" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 204 | 0.390" | 0.626" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 206 | 0.518" | 0.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 207 | 0.580" | 0.816" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 208 | 0.643" | 0.879" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 210 | 0.766" | 1.002" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 211 | 0.828" | 1.064" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 212 | 0.891" | 1.127" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 214 | 1.016" | 1.252" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 216 | 1.141" | 1.377" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 217 | 1.203" | 1.439" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 218 | 1.266" | 1.502" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 220 | 1.397" | 1.633" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 222 | 1.522" | 1.758" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 223 | 1.647" | 1.833" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 224 | 1.772" | 2.008" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 225 | 1.897" | 2.133" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 226 | 2.022" | 2.258" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 227 | 2.147" | 2.383" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 0000000 | 00000 |
| 228 | 2.272" | 2.508" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 229 | 2.397" | 2.633" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 230 | 2.522" | 2.758" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 231 | 2.631" | 2.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 232 | 2.756" | 2.992" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 233 | 2.881" | 3.117" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 234 | 3.006" | 3.242" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 235 | 3.131" | 3.367" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 236 | 3.256" | 3.492" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |