Medium-pressure double-lip oil seal with integrated steel reinforcement element
The dynamic seal lip is made of a premium low-friction Duralast™ material to reduce friction, heat build-up, and wear. The rubber-covered OD of the seal creates a tight seal with the housing bore. The secondary lip serves both effective protection against airside contaminants and as a lube retainer. Maximum service life can be achieved by applying a suitable lubricant between the two sealing lips. A retaining device is recommended to hold the seal in place under pressures above *psi. This seal is able to accommodate press-in fitment in housings with short axial length.
Size Table (Inch)Standard sizes listed below are preferred sizes for new design applications; however, we offer any other seal size as required.Seals are available for any shaft diameter size in 0.001 inch increments, including Functional Range.
A
Shaft Diameter
CS
Cross-section
D
Bore Diameter
B Diameter
Tol. +/-0.010
L
F
C
Chamfer
R1
Radius
Standard Range
Functional Range
Tolerance
*
D=
Tolerance
B=
Tol. +0.010/-0
min.
max.
0.200-0.599"
0.200 - 5.000"
+/-0.003
3/16
A + 0.375
+/-.001
A + 0.100
0.210
0.180
0.040
0.020
0.600-1.299"
0.200 - 6.000"
+/-0.003
1/4
A + 0.500
+/-.001
A + 0.150
0.210
0.180
0.050
0.020
1.300 - 2.299"
0.200 - 8.000"
+/-0.003
5/16
A + 0.625
+/-.001
A + 0.160
0.260
0.210
0.050
0.020
2.300 - 3.299"
0.250 - 10.000"
+/-0.003
3/8
A + 0.750
+/-.001
A + 0.170
0.310
0.265
0.060
0.020
3.300 - 7.999"
0.250 - 15.000"
+/-0.004
1/2
A + 1.000
+/-.0015
A + 0.200
0.410
0.350
0.090
0.030
8.000 - 15.999"
0.250 - 63.000"
+/-0.005
3/4
A + 1.500
+/-.002
A + 0.200
0.510
0.430
0.130
0.030
16.000 - 63.000"
consult with Ahpseals engineering
*Standard cross-sections (CS) listed and non-standard sizes can be provided for any shaft size up to 63 inches. Seal retaining plate for ressures above 7 psi recommended. Surface finish: Shaft (A) plunge ground, zero lead, Ra 8-16µin for rubber seal lip, Ra 6-12µin for PTFE seal lip. Housing (D,L) Ra 32-63µin, shaft material hardness 55-65RC. See Technical Info for more specific information.
Size Table (Metric)Standard sizes listed below are preferred sizes for new design applications; however, we offer any other seal size as required. Seals are available for any shaft diameter size in 0.01 mm increments and in standard DIN 3760 sizes, including Functional Range.
A
Shaft Diameter (mm)
Tol. h11
CS
Cross-section
D
Bore Diameter
Tol. H8
B
Diameter Tol. +/- 0.20
L
F
C
Chamfer
R1
Radius
Standard Range
Functional Range
*
D=
B=
Tol. +0.25/-0
min.
max.
5.00 - 14.99
5.00 - 120.00
5.00
A + 10.00
A + 2.50
7.30
6.00
1.00
0.50
15.00 - 40.99
5.00 - 150.00
6.00
A + 12.00
A + 3.50
7.30
6.00
1.30
0.50
41.00 - 59.99
5.00 - 180.00
7.50
A + 15.00
A + 4.00
8.30
6.80
1.50
0.50
60.00 - 84.99
5.00 - 250.00
10.00
A + 20.00
A + 5.00
10.30
8.50
2.30
0.50
85.00 - 129.99
5.00 - 400.00
12.50
A + 25.00
A + 5.00
12.30
10.20
2.70
0.70
130.00 - 259.99
5.00 - 800.00
15.00
A + 30.00
A + 5.00
15.30
12.70
3.50
0.70
300.00 - 799.99
5.00 - 1600.00
20.00
A + 40.00
A + 5.50
20.30
17.00
5.00
0.70
800.00 - 1600.00
consult with Ahpseals engineering
*Standard cross-sections (CS) listed and non-standard sizes can be provided for any shaft size up to 1600mm. Seal retaining plate for pressures above 0.5 bar recommended. Surface finish: Shaft (A) plunge ground, zero lead, Ra 0.20-0.40µm for rubber seal lip - Ra 0.15-0.30µm for PTFE seal lip Housing (D,L) Ra 0.8-1.6µm. Shaft material hardness min. 55-65RC. See Technical Info for more specific information.
