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National 370212A Wheel Seal - Front Inner
National 370212A Wheel Seal for Oil Bath Axles
National 370212A is an oil bath wheel seal built for axle sealing applications that demand accurate dimensions and dependable fluid retention. It is a direct-fit style seal for Dexter Axle applications and is sized for precise housing bore and shaft diameter requirements.
For buyers searching for a wheel seal for Dexter Axle, National 370212A offers a polyacrylate sealing material and an oil bath seal design that supports axle lubrication containment. The National 370212A part number is also commonly referenced in cross-application searches for axle seal replacement.
Key Features
- Wheel seal / oil bath seal for driveline and axle sealing systems
- Part number: 370212A
- Fits Dexter Axle applications
- Polyacrylate sealing material
- Outside diameter: 5.291 in. (134.390 mm)
- Housing bore: 5.277 in. (134.040 mm)
- Shaft diameter: 3.539 in. (89.890 mm)
- Width: 0.585 in. (15.340 mm)
- Installation tool reference: RD317
Product Details
National 370212A is part of the 370000 series and is engineered as an oil bath seal for axle assemblies that require controlled lubrication sealing at the wheel end. The seal’s dimensions are listed in both inch and metric units, making it easier to verify housing bore, outside diameter, shaft diameter, and width before installation. National has a long history in sealing solutions, and this wheel seal reflects that focus on dimensional accuracy and modern vehicle service needs.
This part cross-references A-1205-D-2032 for the same application. When searching for a wheel seal for Dexter Axle, National 370212A is a relevant replacement reference for service work where exact seal sizing matters.
Common Replacement Reasons
- Oil seepage at the wheel end
- Contamination entering the axle lubrication area
- Seal wear from age, heat, or mileage
- Loss of proper oil bath retention
- Service replacement during axle maintenance
Installation Notes and Tips
Verify housing bore, shaft diameter, and outside diameter before installation to confirm the seal matches the axle assembly. Use installation tool RD317 where specified for proper seating and to reduce the risk of seal damage during installation. Clean the sealing surfaces thoroughly and inspect the axle components for wear or scoring before fitting the new seal.
Quality Assurance
National is recognized for sealing products used across automotive service applications, and this seal is built to meet the dimensional requirements listed for the part. Confirm application details against the axle specification and part number 370212A before installation.
| Brand | National |
|---|---|
| Part Number | 370212A |
| Width | 0.585 |
| Width | 15.340 |
| Outside Diameter | 134.390 |
| Outside Diameter | 5.291 |
| Housing Bore | 134.040 |
| Housing Bore | 5.277 |
| Footnote | Dexter axle |
| Housing Bore (Inch) | 5.277 |
| Housing Bore (MM) | 134.040 |
| Installation Tool | Rd317 |
| Material | Polyacrylate |
| Outside Diameter (Inch) | 5.291 |
| Outside Diameter (mm) | 134.390 |
| Part Description | Oil bath seal |
| Series | 370000 |
| Shaft (Inch) | 3.539 |
| Shaft (MM) | 89.890 |
| Shaft Diameter | 3.539 |
| Shaft Diameter | 89.890 |
| Type | 11 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.585 |
| Width (mm) | 15.340 |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.