Spring-loaded single-lip oil seal-A

A


Spring-loaded single-lip oil seal

Premium spring-loaded single-lip rotary shaft seal made from low friction elastomers with integrated steel reinforcing element. Used for oil or grease retention.

The optimized seal lip design uses a garter spring to maintain a constant radial lip load, thus ensuring optimum sealability. The rubber covered OD press fits to create a positive seal with the housing bore. The rubber OD also provides optimal compensation for housings of different thermal expansion, making it ideal for reducing the risk of fretting corrosion in soft alloy or plastic housings.  A higher surface roughness of the housing bore may be accommodated by this seal style. For dirty, dusty or polluted environments, our AS style with additional dust lip should be used.




Operating Range
MaterialContinuous PressureMax. Pressure SpikeTemperatureSurface Speed
Duralast 8838-LF3psi (0.2bar)7psi (0.5bar)-4 to 392°F (-20 to 200°C)Up to 7,000 fpm (35m/s)
Duralast 5117-LF3psi (0.2bar)7psi (0.5bar)-13 to 212°F (-25 to 100°C)Up to 2,600 fpm (13m/s)
Fluoroelastomer (FKM),Viton®3psi (0.2bar)7psi (0.5bar)-4 to 392°F (-20 to 200°C)Up to 6,000 fpm (30m/s)
Nitrile (NBR)3psi (0.2bar)7psi (0.5bar)-13 to 212°F (-25 to 100°C)Up to 2,400 fpm (12m/s)
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
LF
C
Chamfer
R1
Radius
Standard RangeFunctional RangeTolerance*D=ToleranceTol. +0.010/-0min.max.
0.200-0.599"0.200 - 5.000"+/-0.0033/16A + 0.375+/-.0010.2620.2100.0400.020
0.600-1.299"0.200 - 6.000"+/-0.0031/4A + 0.500+/-.0010.262
0.210
0.050
0.020
1.300 - 2.299"
0.200 - 7.000"
+/-0.003
5/16
A + 0.625
+/-.001
0.325
0.265
0.050
0.020
2.300 - 3.299"
0.250 - 10.000"
+/-0.003
3/8
A + 0.750
+/-.001
0.387
0.300
0.060
0.020
3.300 - 7.999"
0.500 - 15.000"
+/-0.004
1/2
A + 1.000
+/-.0015
0.512
0.425
0.090
0.030
8.000 - 15.999"1.000 - 63.000"+/-0.0053/4A + 1.500+/-.0020.6370.5300.1300.030
16.000 - 30.999"1.000 - 63.000"+/-0.0063/4A + 1.500+/-.0030.6370.5300.1500.030
31.000 - 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.
Surface finish: Shaft (A) plunge ground, zero lead, Ra 8-16µin - Housing (D,L) Ra 32-63µin.
Shaft material hardness min. RC45. See Technical Info for more specific information.

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