High runout Single-lip rotary shaft seal

Solid body single-lip rotary shaft seal for high runout.

This style offers higher shaft runout (up to 0.020” and misalignment up to 0.035”) than traditional oil seals.  This seal design eliminates spring dumping.  The solid rubber design allows the seal to snap into a closed groove; alternatively, a retainer ring can be used to hold the seal in place for open groove installation.  Fitment in many challenging seal locations is possible with this design. This style is available in a wide range of elastomers and small quantities for repairs and seal replacement can be shipped in 1 to 3 days.

Operating Range
MaterialContinuous PressureMax.Pressure SpikeTemperatureSurface Speed
N1013psi (0.2bar)7psi (0.5bar)-13 to 212°F (-25 to 100°C)Up to 2,400 fpm (12m/s)
N1023psi (0.2bar)7psi (0.5bar)-13 to 302°F (-25 to 150°C)Up to 4,000 fpm (20m/s)
V1013psi (0.2bar)7psi (0.5bar)-4 to 392°F (-20 to 200°C)Up to 6,000 fpm (30m/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
Tol. +/- 0.010
Standard RangeFunctional RangeTolerancesectionD=ToleranceB=Tol. +0.010/-0
0.250 - 1.499"0.250 - 8.000"+/-0.0033/8A + 0.750+/-.001A + 0.0600.3870.3000.0600.020
1.500 - 7.999"0.500 - 15.000"+/-0.0041/2A + 1.000+/-.0015A + 0.0800.5120.4250.0900.030
8.000 - 15.999"1.250 - 63.000"+/-0.0055/8A + 1.250+/-.002A + 0.0800.6370.5300.1300.030
16.000 - 30.999"2.500 - 63.000"+/-0.0063/4A + 1.500+/-.003A + 0.0800.6370.5300.1500.030
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 plat is recommended for split seals or ressures above 3psi. Surface finish: Shaft (A) plunge ground, zero lead, Ra 8-16µin Housing (D,L) Ra 32-63µin. Shaft material hardness min. C45. See Technical Info for more specific information.

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Seal Housing Drawing