ID ID |
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OD OD |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Seal OD Seal OD |
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Seal ID Seal ID |
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For Bore Diameter For Bore Diameter |
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For Cylinder Type For Cylinder Type |
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Cylinder Seal Type Cylinder Seal Type |
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| Piston Seal |
 |
| Rod Seal |
 |
| Head Seal |
About O-Rings
More
Close
About Cylinder Seals
Rod wipers scrape dirt, dust, and moisture from the rod, preventing contamination inside your cylinder.
Rod seals maintain the pressure inside cylinders and prevent fluid from leaking out.
Wear rings guide the rod and piston to prevent uneven wear and optimize seal performance.
Head seals are a more reliable alternative to the standard O-ring/backup ring combination—they resist twisting and remain stable even in applications with fluctuating pressure.
Buffering seals protect hydraulic cylinders from pressure spikes and shock in high-pressure hydraulic applications.
Cushioning seals minimize wear and noise in air-powered cylinders by preventing the piston from slamming against the cylinder body.
Piston seals make a seal between their outside edge and the cylinder bore to prevent internal leaks.
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. | |
0.053" Wide | ||||||||
|---|---|---|---|---|---|---|---|---|
| 004 | 0.096" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 005 | 0.127" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 006 | 0.140" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 007 | 0.171" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 008 | 0.202" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 009 | 0.234" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 010 | 0.265" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 011 | 0.327" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 012 | 0.390" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 013 | 0.455" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 014 | 0.518" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 015 | 0.580" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 016 | 0.643" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 017 | 0.705" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 018 | 0.768" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 019 | 0.830" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 020 | 0.893" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 021 | 0.955" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 022 | 1.018" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 024 | 1.143" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 025 | 1.205" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 026 | 1.268" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 028 | 1.393" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 029 | 1.518" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 031 | 1.768" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 042 | 3.268" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
0.086" Wide | ||||||||
| 103 | 0.109" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 109 | 0.327" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 110 | 0.390" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 111 | 0.452" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 112 | 0.515" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 113 | 0.577" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 114 | 0.640" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 115 | 0.702" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 116 | 0.765" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 117 | 0.831" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 118 | 0.893" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 119 | 0.956" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 120 | 1.018" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 121 | 1.081" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 124 | 1.268" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 125 | 1.331" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 126 | 1.393" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 128 | 1.518" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 130 | 1.643" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 131 | 1.706" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 132 | 1.768" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 134 | 1.893" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 135 | 1.956" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 136 | 2.018" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 137 | 2.081" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 141 | 2.331" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 152 | 3.268" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 154 | 3.768" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 155 | 4.018" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 158 | 4.768" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.118" Wide | ||||||||
| 202 | 0.265" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 203 | 0.327" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 204 | 0.390" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 206 | 0.518" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 207 | 0.580" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 208 | 0.643" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 210 | 0.766" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 211 | 0.828" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 212 | 0.891" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 214 | 1.016" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 216 | 1.141" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 217 | 1.203" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 218 | 1.266" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 220 | 1.397" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 222 | 1.522" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 223 | 1.647" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 224 | 1.772" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 225 | 1.897" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 226 | 2.022" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 227 | 2.147" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 0000000 | 0000 |
| 228 | 2.272" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 229 | 2.397" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 230 | 2.522" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 231 | 2.631" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 232 | 2.756" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 233 | 2.881" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 234 | 3.006" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 235 | 3.131" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 236 | 3.256" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 237 | 3.381" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 0000 |
| 238 | 3.506" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 239 | 3.631" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 240 | 3.756" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 241 | 3.881" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 242 | 4.006" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 243 | 4.131" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 244 | 4.256" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 245 | 4.381" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 246 | 4.506" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 247 | 4.631" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 0000 |
| 248 | 4.768" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 249 | 4.893" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 250 | 5.018" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 252 | 5.268" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 254 | 5.518" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 255 | 5.643" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 256 | 5.768" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 257 | 5.893" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 258 | 6.018" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 259 | 6.268" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 260 | 6.518" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 261 | 6.768" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 262 | 7.018" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 265 | 7.768" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.183" Wide | ||||||||
| 322 | 1.263" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 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 |
0.236" Wide | ||||||||
| 426 | 4.676" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 427 | 4.801" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 429 | 5.051" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 433 | 5.551" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 437 | 6.051" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 439 | 6.524" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 443 | 7.524" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 446 | 8.524" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 0000 |
| 451 | 11.024" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 00000 |
| 452 | 11.524" | 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 | 00000 |
| 006 | 0.049" | 0.140" | 0.246" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 007 | 0.049" | 0.171" | 0.277" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 008 | 0.049" | 0.202" | 0.308" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 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 | 0000 |
| 011 | 0.049" | 0.327" | 0.433" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 012 | 0.049" | 0.390" | 0.496" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 013 | 0.049" | 0.455" | 0.561" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 0000 |
| 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 | 0000 |
| 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 | 0000 |
| 120 | 0.049" | 1.020" | 1.192" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 0000 |
| 121 | 0.049" | 1.082" | 1.254" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 0000 |
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 | 000000 |
Rod Seals for O-Ring Grooves
Profile
Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
For Groove | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Rod Dia. | Dia. | Wd. | O-Ring Dash Number Equivalent | Max. Speed, ft./sec. | Max. Pressure, psi | Temp. Range, °F | Hardness | Color | Backup Ring Color | Each | |
Buna-N Rubber with Nylon Plastic Backup Ring | |||||||||||
| 1/2" | 0.742" | 0.187" | 206 | 1.6 | 5,000 | -40° to 225° | Durometer 75A (Hard) | Black | Gray | 0000000 | 00000 |
| 5/8" | 0.867" | 0.187" | 208 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 3/4" | 0.991" | 0.187" | 210 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 7/8" | 1.116" | 0.187" | 212 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 1" | 1.241" | 0.187" | 214 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 1 1/8" | 1.366" | 0.187" | 216 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 1 3/8" | 1.616" | 0.187" | 220 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 1 1/2" | 1.870" | 0.282" | 325 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 1 5/8" | 1.995" | 0.282" | 326 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 0000 |
| 2" | 2.370" | 0.282" | 329 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 00000 |
| 2 1/4" | 2.612" | 0.282" | 331 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 00000 |
| 2 1/2" | 2.870" | 0.282" | 333 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 00000 |
| 2 3/4" | 3.120" | 0.282" | 335 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 00000 |
| 3" | 3.369" | 0.282" | 337 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | Gray | 0000000 | 00000 |
Head Seals
Profile
Replace the standard O-ring/backup ring combination with a more reliable alternative—these head seals resist twisting and remain stable even in applications with fluctuating pressure.
For technical drawings and 3-D models, click on a part number.
For Groove | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Bore Dia. | Dia. | Wd. | O-Ring Dash Number Equivalent | Max. Pressure, psi | Temp. Range, °F | Hardness | Color | Each | |
Polyurethane Rubber | |||||||||
| 1" | 0.838" | 0.171" | 117 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 00000 |
| 1 1/4" | 1.088" | 0.171" | 121 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 1 1/2" | 1.338" | 0.171" | 125 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 1 3/4" | 1.588" | 0.171" | 129 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 2" | 1.838" | 0.171" | 133 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 2 1/4" | 2.088" | 0.171" | 137 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 2 1/2" | 2.338" | 0.171" | 141 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 3" | 2.778" | 0.208" | 232 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 3 1/4" | 3.028" | 0.208" | 234 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 3 1/2" | 3.278" | 0.208" | 236 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
| 4" | 3.778" | 0.208" | 240 | 7,500 | -30° to 230° | Durometer 95A (Extra Hard) | Blue | 0000000 | 0000 |
Piston Seals for O-Ring Grooves
Profile
Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
For Groove | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Dia. | Dia. | Wd. | O-Ring Dash Number Equivalent | Max. Speed, ft./sec. | Max. Pressure, psi | Temp. Range, °F | Hardness | Color | Each | |
Buna-N Rubber with Nylon Plastic Backup Ring | ||||||||||
| 1/2" | 0.316" | 0.152" | 109 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 5/8" | 0.381" | 0.187" | 204 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 3/4" | 0.506" | 0.187" | 206 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 7/8" | 0.631" | 0.187" | 208 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1" | 0.757" | 0.187" | 210 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 1/8" | 0.882" | 0.187" | 212 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 1/4" | 1.007" | 0.187" | 214 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 3/8" | 1.132" | 0.187" | 216 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 1/2" | 1.257" | 0.187" | 218 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 5/8" | 1.382" | 0.187" | 220 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 3/4" | 1.507" | 0.187" | 222 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 1 7/8" | 1.503" | 0.282" | 325 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 2" | 1.628" | 0.282" | 326 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 2 1/8" | 1.753" | 0.282" | 327 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 2 1/4" | 1.878" | 0.282" | 328 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 2 3/8" | 2.003" | 0.282" | 329 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 2 1/2" | 2.128" | 0.282" | 330 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 0000 |
| 3" | 2.628" | 0.282" | 334 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 3 1/4" | 2.878" | 0.282" | 336 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 3 1/2" | 3.129" | 0.282" | 338 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |
| 4" | 3.629" | 0.282" | 342 | 1.6 | 5,000 | -40° to 225° | Durometer 70A (Hard) | Black | 0000000 | 00000 |