Bi-Directional Rod Seal

R30


Bi-Directional Rod Seal

Capable of sealing low to high pressures from both sides with a small footprint. Compact and most economical double-acting rod seal for most bi-directional sealing applications.

 




Operating Range
MaterialOperating Pressure up toMaximum Pressure up toTemperatureSurface Speed up toFluid, Media Compatability
Duralast 42033,800psi (260bar)5,000psi (350bar)-22°F to 260°F (-30°C to 125°C)1.6ft/s (0.5m/s)mineral oil-based fluids, fire-resistant water-based hydraulic fluids including HFA and HFB, sea water, biodegradable fluids, vegetable oils, bio-diesels, and most modern hydraulic fluids
Duralast 44035,000psi (350bar)8,000psi (520bar)-22°F to 260°F (-30°C to 125°C)1.6ft/s (0.5m/s)same as Duralast 4203
Duralast 81662,300psi (160bar)3,800psi (260bar)-4°F to 392°F (-20°C to 200°C)3.2ft/s (1.0m/s)fire-resistant fluids, phosphate esters, mineral oils, greases, and most inorganic acids and chemicals, gasoline and gasoline/alcohol blends, hard vacuum
Duralast 51012,300psi (160bar)3,800psi (260bar)-22°F to 212°F (-30°C to 100°C)1.6ft/s (0.5m/s)mineral-oil based hydraulic fluids, silicone greases, petroleum-based oils, water and alcohols
Duralast 61462,300psi (160bar)3,800psi (260bar)-30°F to 302°F (-35°C to 150°C)2.0ft/s (0.7m/s)excellent heat and oil resistance, including exposure to such oil additives as detergents, anti-oxidants and anti-wear agents
Additional standard materials available: High-performance polyurethanes, NBR (Nitrile), FKM, Viton®, HNBR, EPDM, Aflas®, Hytrel®, Silicone, low- and high-temperature, FDA-compliant seal material grades, PTFE, filled Teflon®, engineered thermoplastics 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, please contact engineering@ahpseals.com
Size Table (Inch)
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.
0.312 - 0.624"
0.300 - 1.500"
+0/-0.001
0.097
A + 0.194
A + 0.024
+0.001/-0
0.087
0.080
0.015
0.006
0.625 - 1.624"
0.560 - 3.500"
+0/-0.002
0.143
A + 0.286
A + 0.026
+0.002/-0
0.126
0.050
0.015
0.006
1.625 - 3.249"
0.750 - 8.000"
+0/-0.003
0.210
A + 0.420
A + 0.027
+0.003/-0
0.165
0.070
0.020
0.006
3.250 - 5.374"
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
5.375 - 12.999"
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
13.000 - 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
* Based on using wear rings. For pressure above 3,800psi, please contact engineering for clearances. For rod diameter below 0.475 inch, 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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Seal Housing Drawing