Heavy-duty single-lip oil seal-RLS


Heavy-duty single-lip oil seal

Heavy-duty single-lip rotary shaft seal design for use in harsh and severe environments and shock loads. 

Designed to handle harsh or arduous conditions where most seals have a short life.  This style has higher shaft run-out and misalignment than traditional oil seals.  Available in many metal and lip materials, this seal can handle high speed runout or pressurized chemicals.  It utilizes press-in fitment for open seal housing.  This seal design eliminates spring dumping, and provides protection for the sealing lip during installation.  It can be retrofitted to replace standard seals.

Operating Range
MaterialContinuous PressureMax.Pressure SpikeTemperatureSurface Speed
N1013psi (0.2bar)7psi (0.5bar)-13 to 212°F (-25 to 100°C)Up to 1,800 fpm (9m/s)
N1023psi (0.2bar)7psi (0.5bar)-13 to 302°F (-25 to 150°C)Up to 2,800 fpm (14m/s)
V1013psi (0.2bar)7psi (0.5bar)-4 to 392°F (-20 to 200°C)Up to 4,000 fpm (20m/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.
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