Spring-loaded reinforced metal-cased single-lip oil seal

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Spring-loaded reinforced metal-cased single-lip oil seal

Premium spring-loaded single-lip rotary shaft seal with heavy duty metal structure. Used for oil or grease retention.

 The reinforced metal casing protects the sealing lip from damage or accidental spring dislocation when shaft installation is against the sealing lip.  An optimized seal lip with a steel garter spring maintains a constant radial lip force for optimum sealing.  The metal case is exposed to the elements and to the fluid; however, the application of an optional sealant coating to the case improves both static sealing and corrosion resistance between the housing and the seal OD.  For dirty, dusty or polluted environments, our CS 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
L F
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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