SKF 22441 Shaft Seal 2.25 in ID 3.251 in OD .375 in Width
Rotary shaft seal with 2.25 in ID, 3.251 in OD, .375 in width, nitrile lips and 10 psi pressure rating
- Product colorTransparent
- Overall width3/8 in
- Fits 2.25 in shafts with 3.251 in bore
- Twin-lip nitrile rubber resists oil, fuel and hot water
- Carbon-steel garter spring maintains lip pressure at speed
- Rated for 820 RPM and 8.38 m/s surface velocity
- Acrylic-coated case eases installation and protects housing
SKF 22441 Rotary Shaft Seal
The SKF 22441 is a CRWA1-design rotary shaft seal built for engine and driveline service. It fits a 2.25 in shaft inside a 3.251 in bore with a .375 in overall width. Mechanics and rebuilders use it to retain lubricant and exclude contamination on rotating assemblies.
Thermals Noise and Power
The nitrile rubber lip material handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Maximum pressure is rated at 10 psi while the maximum rotational speed reaches 820 RPM with a surface speed of 8.38 mps. An acrylic case coating adds corrosion resistance during operation.
Bundled Spring and Lip Design
Two sealing lips and a carbon-steel garter spring maintain consistent radial load across the contact seal interface. This arrangement compensates for lip wear and shaft run-out without extra components. No installation tools or mounting hardware are included in the package.
How it compares
Measured against everything we stock in Engine Service & Diagnostic Tools, at today’s prices. Recalculated every night.
- Price $9.99
- Cheaper than about 87% of the 1,113 comparable items (median $19.99).
Specifications
| Product | |
|---|---|
| Brand name | SKF |
| Product color | Transparent |
| Size & build | |
| Overall width | 3/8 in |
Questions about this item
How do I press the 2.25 in ID seal into the housing without damaging the NBR lips?
Use a flat sleeve driver that contacts only the outer metal case and press evenly until the case seats flush; hammering directly on the lips tears the nitrile rubber.
When should I replace the seal if it runs at 2,820 RPM in mineral oil?
Inspect the NBR lips at each oil change; replace when the spring-loaded contact shows hardening, cracking or a visible wear groove on the shaft.
What operating limit appears first if the shaft speed creeps above 8.38 mps surface speed?
The NBR lip temperature rises sharply, causing the material to harden and lose its sealing pressure before the 10 psi pressure rating is reached.
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