Single-lip grease seal

Grease seal with thermoplastic case for press-in fitment in an open housing.  Designed to control leakage in grease-packed bearings.

The springless lip imparts low friction and heat generation. The thermoplastic case ensures concentric fitment and increased corrosion resistance over traditional seals. This is an excellent low friction seal for non-pressurized media such as grease or highly viscous fluids. This seal is also available in small quantities for repairs and seal replacements within 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