S9
Low-Friction Hydraulic Rod Seal
Uni-directional low-friction O-ring-energized rod seal. This seal includes a secondary lip that gives the seal stability over a long stroke, acts as an excluder and retains fluid film. Can be used as a stand-alone seal.
Operating Range
| Material | Operating Pressure up to | Maximum Pressure up to | Temperature | Surface Speed up to | Fluid, Media Compatability |
|---|---|---|---|---|---|
| Permachem 6643 | 3,800psi (260bar) | 5,000psi (350bar) | -40°F to 400°F (-40°C to 210°C) | 13ft/s (4m/s) | mineral oil-based fluids, fire-resistant water-based hydraulic fluids including HFA and HFB, biodegradable fluids, vegetable oils, bio-diesels, and most modern hydraulic fluids |
| Permachem 6150 | 5,000psi (350bar) | 6,000psi (420bar) | -40°F to 400°F (-40°C to 210°C) | 13ft/s (4m/s) | same as Permachem 6643 |
| Additional standard materials available: PTFE, filled PTFE®, engineered thermoplastics, high-performance polyurethanes, NBR (Nitrile), FKM, Viton®, HNBR, EPDM, Aflas®, Hytrel®, Silicone, low- and high-temperature, FDA-compliant seal material grades and proprietary specialized Duralast™, Duraloy™, and Permachem™ materials. | |||||
| Important Note: Maximum values above depend on extrusion gap, clearances, seal material, media, temperatures, pressures, surface speed, dynamic running surface finish and working environment. Seals cannot be operated at their upper ratings at the same time. Pressure ratings can be increased by reducing clearances. For pressure above specified operating pressure, surface speed above 5ft/s (1.3m/s), or for any advice, please contact engineering@ahpseals.com | |||||
Size Table (Inch)The standard range sizes listed below are the preferred sizes for new design applications. Seals are available for any rod size in 0.001inch increments, including functional range. Additionally, we offer any other seal size as required.
| A Rod Diameter | CS Cross-Section | D Groove Diameter | B* Gland Diameter | Tolerance | L Groove Width | C | R1 | R | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Standard Range | Functional Range | Tolerance | D= | B= | D,B | Tol.+0.008/-0 | min. | max. | max. |
|
| 0.125 - 0.311" | 0.125 - 1.500" | +0/-0.001 | 0.097 | A + 0.194 | A + 0.024 | +0.001/-0 | 0.087 | 0.080 | 0.015 | 0.006 |
| 0.312 - 0.749" | 0.312 - 2.500" | +0/-0.002 | 0.143 | A + 0.286 | A + 0.026 | +0.002/-0 | 0.126 | 0.050 | 0.015 | 0.008 |
| 0.750 - 1.499" | 0.750 - 8.000" | +0/-0.003 | 0.210 | A + 0.420 | A + 0.027 | +0.003/-0 | 0.165 | 0.070 | 0.020 | 0.008 |
| 1.500 - 7.999" | 1.500 - 10.500" | +0/-0.003 | 0.297 | A + 0.594 | A + 0.029 | +0.003/-0 | 0.248 | 0.100 | 0.040 | 0.008 |
| 8.000 - 9.999" | 5.000 - 26.500" | +0/-0.004 | 0.403 | A + 0.806 | A + 0.030 | +0.004/-0 | 0.319 | 0.130 | 0.050 | 0.008 |
| 10.000 - 26.500" | 10.000 - 40.000" | +0/-0.005 | 0.473 | A + 0.946 | A + 0.034 | +0.005/-0 | 0.319 | 0.130 | 0.050 | 0.008 |
| > 26.500" | consult with Ahpseals engineering |
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| * Based on using wear rings. For pressure above 3,800psi, please contact engineering for clearances. For rod diameter below 0.475" open or split housing is recommended. Surface finish: rod (A) Ra 4-12µin – Static (D,L) Ra max. 32µin. See Technical Info for more specific information. |
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