Supreme medium-pressure double-lip oil seal

Medium-pressure double-lip oil seal with integrated seal lip support, and proprietary blends of PTFE bonded onto the dynamic sealing lip.

Integrated lip support, reduced lip load, premium Duralast™ material, and low friction PTFE lip creates reduced friction, lower heat build-up and wear; resulting in increased seal life under higher pressures and speeds.  This allows the seal to handle higher operating pressure.  The rubber-covered OD of the seal creates a tight seal with the housing bore, and the press-in fitment design accommodates housings with short axial space requirements.  The secondary lip serves as 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.

Operating Range
MaterialContinuous PressureMax. Pressure SpikeTemperatureSurface SpeedDry-runPV-Rating
Fluoroelastomer (FKM), Viton®/PTFE150psi (10.3bar)300psi (20.7bar)-40 to 400°F (-40 to 200°C)Up to 5,000 fpm (25m/s)YES7
NBR/PTFE150psi (10.3bar)300psi (20.7bar)-40 to 230°F (-40 to 110°C)Up to 2,500 fpm (12.5m/s)YES5
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.
Shaft Diameter
Bore Diameter
B Diameter
Tol. +/- 0.010
Standard RangeFunctional RangeToleranceD=ToleranceB=Tol. +0.010/-0 min.max.
0.750-2.999"0.750 - 31.000"+/-0.0037/16A + 0.875+/-.001A + 0.1000.4500.383
3.000 - 5.999"0.750 - 31.000"+/-0.0041/2A + 1.000+/-.0015A + 0.2000.5120.4250.0900.030
6.000 - 13.999"1.000 - 31.000"+/-0.0055/8A + 1.250+/-.002A + 0.2000.6370.5300.1300.030
14.000 - 30.999"2.000 - 31.000"+/-0.0063/4A + 1.500+/-.003A + 0.2200.6370.5300.1500.030
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. Seal retaining plate for pressures 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.

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Seal Housing Drawing