Description
The National Oil Seals 370022A is a CR-style drive-axle wheel hub seal, 4.500″ x 5.750″ x 0.960″ (114.3mm x 146mm x 24mm), engineered for oil-bath rear hub applications on Meritor, Spicer, Mack, Hendrickson, Eaton, and other heavy-duty drive axles. Triple-lip dirt-exclusion design with graphite-loaded rubber compound prevents lubricant escape and blocks abrasive contamination from entering the bearing cavity.
Specifications
| Manufacturer | National Oil Seals (SKF) |
|---|---|
| Part Number | 370022A |
| Part Type | Drive Axle Wheel Hub Seal (Oil-Bath) |
| Inside Diameter | 4.500″ (114.3mm) |
| Outside Diameter | 5.750″ (146mm) |
| Width | 0.960″ (24mm) |
| Lip Design | Triple-Lip Dirt Exclusion |
| Sealing Element | Graphite-Loaded Rubber Compound |
| Casing | Reinforced Outer Steel |
Cross References
This wheel seal replaces or is equivalent to:
- National (SKF): 370022A
- Also known as: ME370022A, 1204-370022A, S-12299, PAT 4856784
Applications
Drive-axle wheel hub installations on these axle/manufacturer platforms:
- Meritor (Rockwell) drive axles
- Dana Spicer drive axles
- Mack drive axles (matching dimensions)
- Hendrickson drive axles
- Eaton, Dexter, Standard Forge, Westport applications using 4.500″ x 5.750″ x 0.960″ oil-bath seal
Stemco wheel seals (309-0903, 393-0103, 392-9094, etc.) are sized by axle weight rating rather than direct dimensional match — confirm your spindle dimensions and axle GAWR before substituting between brands.
