Contact Us
Rod & Piston (Dynamic) Design Guide
'Rod' & 'Piston' styled O-ring grooves are commonly used dynamic O-ring sealing configurations. This page specifically concerns dynamic (moving) reciprocating Rod & Piston O-ring seals.
The purpose of the tables below are to serve as a design guide for dynamic reciprocating Rod & Piston O-ring grooves using AS568 O-ring sizes*.
* Please note that some AS568-0XX O-rings have atypical cross sections. Please see our General Groove Guide for more information, or feel free to get in touch with our engineers if you have any questions.
.png)
Surface Finishes are RMS Values
| DASH # RANGE | O-RING CROSS SECTION | GLAND DEPTH (D) | SQUEEZE | GLAND WIDTH (W) | GLAND CORNER RADIUS | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AS568 | Nominal (in) | Nominal (in) | Actual (in) | Percent | Nominal (in) | R1 (in) | R2 (in) | |||||
| -006 through -012 | 0.070 ± 0.003 | 0.055 - 0.057 | 0.010 - 0.018 | 15 - 25 | 0.093 - 0.098 | 0.01 | 0.005 | |||||
| -104 through -116 | 0.103 ± 0.003 | 0.088 - 0.090 | 0.010 - 0.018 | 10 - 17 | 0.140 - 0.145 | 0.01 | 0.005 | |||||
| -201 through -222 | 0.139 ± 0.004 | 0.121 - 0.123 | 0.012 - 0.022 | 9 - 16 | 0.187 - 0.192 | 0.018 | 0.005 | |||||
| -309 through -349 | 0.210 ± 0.005 | 0.185 - 0.188 | 0.017 - 0.030 | 8 - 14 | 0.281 - 0.286 | 0.028 | 0.005 | |||||
| -425 through -460 | 0.275 ± 0.006 | 0.237 - 0.240 | 0.029 - 0.044 | 11 - 16 | 0.375 - 0.380 | 0.028 | 0.005 | |||||
Back to Reference Hub
Get A Quote Now!
Groove Design References
Learn More
Coatings, Packaging, & Other Services
Learn More
Custom Parts & Custom O-rings
Learn More