X-Ring Seals, (aka Quad-Ring®)
Suggested Groove Design for X-Rings
Due to their unique four-lobed geometry, grooves for X-Rings are different than those for O-Rings. In general, X-Rings grooves are deeper, as less squeeze is required to affect a positive seal. X-Rings grooves are also narrower due to their ability to resist “spiral failure” better than O-Rings. The following chart displays general recommendations for X-Rings.
| Seal No. | Cross-Section | Depth (dynamic) | Depth (static) | Width |
| 004 thru 050 | .070" ± .003" | .060"/.062" | .050"/.057" | .080" |
| 103 thru 170 | .103" ± .003" | .093"/.095" | .088"/.090" | .115" |
| 204 thru 276 | .139" ± .004" | .127"/.129" | .121"/.123" | .155" |
| 312 thru 382 | .210" ± .005" | .195"/.197" | .187"/.189" | .240" |
| 425 thru 464 | .275" ± .006" | .255"/.257" | .243"/.245" | .310" |
