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Cross Section Shape Cross Section Shape | Show |
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 | Rectangle |
Dash Number Dash Number |
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For Use With For Use With |
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Hardness Rating Hardness Rating |
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 | Hard |
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Minimum Temperature Minimum Temperature |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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 | 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 | 0000 |
| 130 | 1.643" | 1.815" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 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 | 0000 |
| 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 | 0000 |
| 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 | 0000 |
| 228 | 2.272" | 2.508" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 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 |
| 237 | 3.381" | 3.617" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 0000 |
| 238 | 3.506" | 3.742" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 239 | 3.631" | 3.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 240 | 3.756" | 3.992" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 241 | 3.881" | 4.117" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 242 | 4.006" | 4.242" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 243 | 4.131" | 4.367" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 244 | 4.256" | 4.492" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 245 | 4.381" | 4.617" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 246 | 4.506" | 4.742" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 247 | 4.631" | 4.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 00000 |
| 248 | 4.768" | 5.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 249 | 4.893" | 5.129" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 250 | 5.018" | 5.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 252 | 5.268" | 5.504" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 254 | 5.518" | 5.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 255 | 5.643" | 5.879" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 256 | 5.768" | 6.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 257 | 5.893" | 6.129" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 258 | 6.018" | 6.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 259 | 6.268" | 6.504" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 260 | 6.518" | 6.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 261 | 6.768" | 7.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 262 | 7.018" | 7.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 265 | 7.768" | 8.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
0.183" Wide | |||||||||
| 322 | 1.263" | 1.629" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 323 | 1.316" | 1.682" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 325 | 1.513" | 1.879" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 326 | 1.638" | 2.004" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 329 | 2.013" | 2.379" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 330 | 2.138" | 2.504" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 333 | 2.518" | 2.884" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 334 | 2.643" | 3.009" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 337 | 3.018" | 3.384" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 338 | 3.143" | 3.509" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 339 | 3.273" | 3.639" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 340 | 3.398" | 3.764" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 341 | 3.523" | 3.889" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 00000 |
| 342 | 3.648" | 4.014" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 343 | 3.773" | 4.139" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 344 | 3.898" | 4.264" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 345 | 4.028" | 4.394" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 346 | 4.153" | 4.519" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 349 | 4.528" | 4.894" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 351 | 4.778" | 5.144" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 358 | 5.653" | 6.019" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.236" Wide | |||||||||
| 426 | 4.676" | 5.148" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 427 | 4.801" | 5.273" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 429 | 5.051" | 5.523" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 433 | 5.551" | 6.023" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 437 | 6.051" | 6.523" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 439 | 6.524" | 6.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 443 | 7.524" | 7.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 446 | 8.524" | 8.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 0000 |
| 451 | 11.024" | 11.496" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 00000 |
| 452 | 11.524" | 11.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 00000 |
Ultra-Chemical-Resistant PTFE Backup Rings
These PTFE backup rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and many acids. 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 | Thick. | ID | OD | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
0.053"Wide | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 005 | 0.049" | 0.124" | 0.230" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 000000 |
| 006 | 0.049" | 0.140" | 0.246" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 007 | 0.049" | 0.171" | 0.277" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 008 | 0.049" | 0.202" | 0.308" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 009 | 0.049" | 0.234" | 0.340" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 010 | 0.049" | 0.265" | 0.371" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 011 | 0.049" | 0.327" | 0.433" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 012 | 0.049" | 0.390" | 0.496" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 013 | 0.049" | 0.455" | 0.561" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 014 | 0.049" | 0.518" | 0.624" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 015 | 0.049" | 0.580" | 0.686" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 016 | 0.049" | 0.643" | 0.749" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 017 | 0.049" | 0.705" | 0.811" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 018 | 0.049" | 0.768" | 0.874" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
0.086"Wide | |||||||||
| 110 | 0.049" | 0.390" | 0.562" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 111 | 0.049" | 0.452" | 0.624" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 112 | 0.049" | 0.515" | 0.687" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 113 | 0.049" | 0.577" | 0.749" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 114 | 0.049" | 0.640" | 0.812" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 115 | 0.049" | 0.702" | 0.874" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 116 | 0.049" | 0.765" | 0.937" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 117 | 0.049" | 0.832" | 1.004" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 0000 |
| 118 | 0.049" | 0.895" | 1.067" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 119 | 0.049" | 0.957" | 1.129" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 120 | 0.049" | 1.020" | 1.192" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 121 | 0.049" | 1.082" | 1.254" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 0000 |
| 133 | 0.049" | 1.834" | 2.006" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
0.119"Wide | |||||||||
| 210 | 0.049" | 0.766" | 1.004" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 211 | 0.049" | 0.828" | 1.066" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 212 | 0.049" | 0.891" | 1.129" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 213 | 0.049" | 0.953" | 1.191" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 214 | 0.049" | 1.016" | 1.254" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 215 | 0.049" | 1.078" | 1.316" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 216 | 0.049" | 1.141" | 1.379" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 217 | 0.049" | 1.203" | 1.441" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 218 | 0.049" | 1.266" | 1.504" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 219 | 0.049" | 1.334" | 1.572" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 222 | 0.049" | 1.522" | 1.760" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
0.183"Wide | |||||||||
| 328 | 0.07" | 1.888" | 2.254" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 329 | 0.07" | 2.013" | 2.379" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 330 | 0.07" | 2.138" | 2.504" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
Backup Ring Assortments
These 325-piece assortments mean you’ll always have a backup ring on hand. Use them to extend the life of your O-rings and improve their performance in high-pressure applications. The backup rings are made of PTFE and resist harsh chemicals such as, acetone, fluorinated solvents, methanol, and many acids.
| Number of Pieces | Number of Sizes | Includes | Hardness | Temperature Range, °F | Color | Each | |
| 325 | 36 | Dash Numbers 005-018, 110-121, 210-219 | Durometer 55D (Hard) | -100° to 500° | White | 0000000 | 0000000 |