Flanged single-lip PTFE rotary shaft seal

SB11


Flanged single-lip PTFE rotary shaft seal 

This flanged seal design incorporates a formed seal lip for low lip load and low friction and is capable of handling aggressive media, dry run, and low to medium pressures.  The soft OD eliminates damage to housings, and the flange serves as an anti-rotation device where the media being sealed precludes the use of an elastomer. It is typically used to provide a low friction solution and as a secondary seal in a purging or ported system.  Small quantities are available in 2-4 days.




Operating Range
MaterialContinuous PressureMax.Pressure SpikeTemperatureSurface SpeedApplicationDry-runPV-Rating
Permachem 6233110psi (7.6bar)300psi (20bar)-80 to 400°F (-60 to 200°C)Up to 5,000 fpm (25m/s)standard oil lubrication, high waterbased fluidsYES5
Permachem 6235110psi (7.6bar)300psi (20bar)-80 to 400°F (-60 to 200°C)Up to 5,000 fpm (25m/s)Soft shaft material, gaseous media, FDA compliantYES5
Duraloy 4736110psi (7.6bar)300psi (20bar)-80 to 400°F (-60 to 200°C)Up to 5,000 fpm (25m/s)low wear and abrasion, long service lifeYES5
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 without tooling charges, including Functional Range.
A
Shaft Diameter
CS
Cross-section*
D
Bore
Diameter
B
Diameter
**
Tolerances
K
F
L
Single Lip
L
Double Lip
H
C
R
Standard Range
Functional Range
Tolerance
D=
B=
D, B
+ 0.010/-0
+0/-.004
Tolerances +0.010/-0
min.
max.
0.315 - 1.999"
0.315 - 5.000"
+0/-0.003
1/4
A + 0.500
A + 0.030
+/-0.001
A + 0.820
0.080
0.340
0.390
0.025
0.025
0.015
2.000 - 5.999"
0.315 - 18.000"
+0/-0.003
3/8
A + 0.750
A + 0.030
+/-0.002
A + 1.230
0.080
0.470
0.470
0.035
0.030
0.015
6.000 - 15.999"
0.500 - 26.000"
+0/-0.004
1/2
A + 1.000
A + 0.035
+/-0.002
A + 1.600
0.090
0.540
0.600
0.055
0.060
0.015
16.000 - 25.999"
1.000 - 26.000"
+0/-0.006
5/8
A + 1.250
A + 0.040
+/-0.003
A + 1.95
0.100
0.610
0.610
0.065
0.080
0.015
26.000 - 63.000"
consult AHPSeals engineering
*Standard cross-sections (CS) listed and non-standard sizes can be provided for any shaft size up to 63 inches.**For pressure above 3,000psi or temperature above 200°F, contact engineering for clearances. Surface finish: Shaft (A) plunge ground, zero lead Ra 6-12µin, Housing (D,L) Ra 16-32µin. Shaft material hardness 55-65RC. See Technical Info for more specific information.

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