High–pressure compact rod seal design. The design utilizes two positively actuated live anti-extrusion back-up rings to support very high pressure from both sides. Available in Viton®, Nitrile, H-Nbr, Aflas® and other materials. Designed to retrofit standard O-ring grooves designed for no back-up, single or two back-up rings. Retro fits seals of similar design.
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 4403
8,000psi (520bar)
14,500psi (1000bar)
-22°F to 260°F (-30°C to 125°C)
1.6ft/s (0.5m/s)
same as Duralast 4203
Duralast 8166
3,800psi (260bar)
5,000psi (350bar)
-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 5101
3,800psi (260bar)
5,000psi (350bar)
-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 6146
3,800psi (260bar)
5,000psi (350bar)
-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 PTFE®, 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)Standard range sizes listed below are preferred sizes for new design applications; however, we offer any other seal size as required. Seals are available for any rod diameter size in 0.001 inch increments, including functional range.
A
Rod Diameter
CS
Cross-Section
D
Groove Diameter
B**
Gland
Diameter
Tolerance
L
Groove
Standard*
L
Groove
Medium*
L
Groove
Narrow*
C
R1
R
Standard Range
Functional Range
Tolerance
D=
B=
D,B
Tol.+0.005/-0
Tol.+0.005/-0
Tol.+0.005/-0
min.
max.
max.
0.375 - .499"
0.375 - 2.000"
+0/-0.001
0.088
A + 0.176
A + 0.002
-0/+0.001
0.240
0.170
0.140
0.035
0.020
0.006
0.500 - 1.449"
0.500 - 6.000"
+0/-0.002
0.121
A + 0.242
A + 0.003
-0/+0.002
0.275
0.210
0.190
0.045
0.020
0.006
1.500 - 4.999"
1.500 - 18.000"
+0/-0.003
0.185
A + 0.370
A + 0.003
-0/+0.003
0.410
0.310
0.280
0.060
0.020
0.006
5.000 - 26.500"
4.000 - 26.500"
+0/-0.004
0.237
A + 0.474
A + 0.004
-0/+0.004
0.540
0.410
0.380
0.080
0.020
0.006
> 26.500"
consult with Ahpseals engineering
*Standard groove to retrofit O-ring grooves with 2 back-up rings. Medium groove to retrofit O-ring grooves with one back-up ring. Narrow groove to retrofit O-ring grooves with no back-up ring.
** Based on using no wear rings. Surface finish: rod (A) Ra 4-12µin – Static (D,L) Ra max. 32µin. See Technical Info for more specific information.
Size Table (Metric)Standard range sizes listed below are preferred sizes for new design applications; however, we offer any other seal size as required. Seals are available for any rod diameter size in 0.01 mm increments, including functional range.
A
Rod Diameter (mm)
Tolerance h8
CS
Cross-Section
D
Groove
Diameter
B**
Gland
Diameter
L
Groove
Standard*
L
Groove
Medium*
L
Groove
Narrow*
C
R1
R
Standard Range
Functional Range
Tol. H9
Tol. H9
Tol.+0.15/-0
Tol.+0.15/-0
Tol.+0.15/-0
min.
max.
max.
9.50 - 12.69
9.50 - 50.00
2.25
A + 4.50
A + 0.05
6.10
4.30
3.60
0.90
0.50
0.15
12.70 - 36.99
12.00 - 150.00
3.10
A + 6.20
A + 0.08
7.00
5.30
4.80
1.10
0.50
0.15
37.00 - 124.99
35.00 - 460.00
4.70
A + 9.40
A + 0.08
10.40
7.90
7.10
1.50
0.50
0.15
125.00 - 673.00
100.00 - 673.00
6.00
A + 12.00
A + 0.10
13.70
10.40
9.70
2.00
0.50
0.15
> 673.00
consult with Ahpseals engineering
*Standard groove to retrofit O-ring grooves with 2 back-up rings. Medium groove to retrofit O-ring grooves with one back-up ring. Narrow groove to retrofit O-ring grooves with no back-up ring.
** Based on using no wear rings. Surface finish: rod (A) Ra 0.1-0.3µm – Static (D,L) Ra max. 0.8µm. See Technical Info for more specific information.
