Overview
The SKF 24898 oil seal is a CRWA1-type small-bore radial shaft seal manufactured by SKF, a leading supplier of bearing and sealing solutions. Designed for rotary shaft applications, this double-lip oil seal combines durable nitrile rubber construction with a wave lip profile that reduces operational heat and friction compared to conventional radial seals. The steel case with Bore Tite coating ensures secure housing retention and long service life in demanding industrial environments.
Key Features
- Wave Lip Design: Sinusoidal lip motion generates up to 30% less heat and 20% less friction than standard seals
- Double Lip Construction: Two sealing lips with carbon steel garter spring for consistent radial load and dependable contact pressure
- Nitrile Rubber (NBR) Material: Resistant to mineral oils, diesel, gasoline, greases, and light heating oils
- Metal Case with Bore Tite Coating: Precision fit in housing bore; prevents radial slippage during operation
- Compact Size: 0.375 in width ideal for applications with limited axial space
Technical Specifications
The following specifications define the SKF 24898 for proper installation and compatibility verification:
| Parameter | Value |
| Seal Design Type | CRWA1 (Radial Shaft Seal) |
| Shaft Diameter (Inside Dia) | 2.5 in (63.5 mm) |
| Housing Bore Diameter (Outside Dia) | 3.251 in (82.55 mm) |
| Seal Width | 0.375 in (9.53 mm) |
| Number of Lips | 2 (Double Lip) |
| Lip Material | Nitrile Rubber (NBR) |
| Case Material | Steel with Bore Tite Coating |
| Spring Type | Carbon Steel Garter Spring |
| Operating Temperature Range | -40 to 212 °F (-40 to 100 °C) |
| Maximum Pressure Tolerance | 10 psi |
| Maximum Rotational Speed | 2,640 RPM |
| Maximum Surface Speed | 8.81 m/s (1,734 ft/min) |
| Seal Configuration | Solid (Not Split) |
| Cross-Section Shape | R |
| Product Net Weight | 0.07937 lb (0.0360 kg) |
| UPC Code | 085311026826 |
Typical Applications
The SKF 24898 oil seal is widely used in industrial machinery requiring reliable shaft sealing at moderate speeds and pressures. Common applications include:
- Electric motor end shields and bearing housings
- Gearbox input/output shaft sealing
- Pump and compressor shaft sealing
- Industrial fan and blower assemblies
- Automotive and heavy equipment drivetrain components
- General mechanical equipment requiring oil retention in rotating assemblies
Compatibility & Replacements
Compatible With
- Any rotating shaft application with 2.5 in diameter and 3.251 in bore diameter
- Systems using mineral oil, diesel, or equivalent lubricants
- Standard bearing housings and gearbox assemblies
- Electric motor end-bell assemblies
- Equipment operating in the temperature range of -40 to 212 °F
Replaces / Drop-In Replacement For
The SKF 24898 is a standard industry part number for CRWA1-type seals in this size range. Equivalent seals from other manufacturers sharing the same dimensions (2.5″ ID × 3.251″ OD × 0.375″ width) may serve as alternatives; however, verify material and lip design compatibility with your equipment OEM before substitution.
Works With
- SKF Compatible Wear Sleeves: Models 99248, 99250, 99253, 99840
- SKF Compatible V-Rings: Models 400650, 400651, 400654, 400655, 400659
- Standard industrial bearing and housing configurations
- Any lubrication system using approved mineral, synthetic, or biodegradable oils
