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National 370150A Wheel Seal - Front Inner
National 370150A Wheel Seal Overview
The National 370150A wheel seal is an oil bath seal built for driveline and axle sealing applications where consistent lubricant retention matters. It uses nitrile material and precise dimensions to support a secure seal at the housing bore, shaft, and outside diameter.
For buyers searching for a wheel seal for Ford, Lincoln, or Mercury axle service, this National 370150A seal provides the dimensional fit needed for service work on compatible applications.
Key Features
- Part number: 370150A
- Wheel seal / oil bath seal design
- Nitrile sealing material
- Outside diameter: 3.885 in. / 98.780 mm
- Housing bore: 3.875 in. / 98.430 mm
- Shaft diameter: 2.875 in. / 73.030 mm
- Width: 0.700 in. / 17.780 mm
- Series: 370000
- Installation tool reference: RD272
Detailed Description
National 370150A is a wheel seal in the 370000 series, engineered with nitrile construction for sealing performance in oil bath applications. Its listed dimensions help match the seal to the housing bore and shaft interface during axle or hub service. National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and modern vehicle service needs. This part cross-references SKF 27438 and Timken 10P28750 for the same application.
When servicing Ford, Lincoln, or Mercury driveline components, confirming the housing bore, shaft diameter, and seal width is essential. The National 370150A is specified as a wheel seal for applications that require a 3.875-inch housing bore and 2.875-inch shaft diameter.
What It Helps Address
- Gear oil or lubricant leakage at the wheel end
- Contamination entering the hub or axle seal area
- Seal wear from age, heat, or mileage
- Improper sealing after axle or hub service
- Noise or maintenance issues related to lubricant loss
Installation Notes and Tips
Verify the housing bore, shaft diameter, outside diameter, and width before installation. Use the specified installation tool RD272 when the service procedure calls for it, and inspect the sealing surface for scoring or wear before fitting the new seal. Clean the bore and surrounding components thoroughly so the seal seats evenly.
For fitment-based searches, this part is commonly referenced for Ford, Lincoln, and Mercury wheel seal service. Confirm the application by matching the vehicle’s axle or hub specifications to the listed dimensions before installation.
Quality Assurance
National is recognized for sealing products and has supported the aftermarket with premium sealing solutions for decades. The 370150A is built to the listed dimensional specifications and material type for dependable service in oil bath seal applications.
| Brand | National |
|---|---|
| Part Number | 370150A |
| Width | 0.700 |
| Width | 17.780 |
| Outside Diameter | 3.885 |
| Outside Diameter | 98.780 |
| Housing Bore | 3.875 |
| Housing Bore | 98.430 |
| Housing Bore (Inch) | 3.875 |
| Housing Bore (MM) | 98.430 |
| Installation Tool | Rd272 |
| Material | Nitrile |
| Outside Diameter (Inch) | 3.885 |
| Outside Diameter (mm) | 98.780 |
| Part Description | Oil bath seal |
| Series | 370000 |
| Shaft (Inch) | 2.875 |
| Shaft (MM) | 73.030 |
| Shaft Diameter | 2.875 |
| Shaft Diameter | 73.030 |
| Type | 07 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.700 |
| Width (mm) | 17.780 |
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.