Description
National 370025A is a spring-loaded oil-bath wheel seal for trailer axles, replacing SKF 46305, Stemco 373-0143, and ConMet 10045888. Engineered for Meritor TN-series 22,500 lb trailer axles running HM218 / HM212 tapered roller bearings, it features an abrasion-resistant nitrile main lip on a 4.625 in shaft.
Signs You Need a New Wheel Seal
- Oil leaking from the wheel hub or onto the brake drum
- Low or contaminated hub oil at PM inspection
- Oily film on the inside of the wheel or rim
- Brake grab or drum glazing from oil contamination
Specifications
| Manufacturer | National (Federal-Mogul / DRiV) |
|---|---|
| Part Number | 370025A |
| Part Type | Trailer Axle Wheel Seal |
| Axle Application | Meritor TN-series trailer axle, 22,500 lb rating |
| Bearing Compatibility | HM218210 / HM218248 and HM212011 / HM212049 |
| Bore | 6.001 in |
| Outside Diameter | 6.006 in |
| Width | 1.063 in |
| Shaft Size | 4.625 in |
| Lip Material | Nitrile, spring-loaded main lip |
| Hub Configuration | Oil bath |
Cross References
This part replaces or is equivalent to the following part numbers:
- SKF / Chicago Rawhide: 46300, 46304, 46305, 46306, 46308, 42626
- Stemco: 373-0143, 307-0743, 372-7097
- ConMet: 10005436, 107553, 10045888
- Meritor: A1205G2191, A1205R2566, A1205X1662, A1205C2343, A1205K999, A1205L1598, A1205P1212, A1205X2702, MER0113, MER0243
- Hendrickson: A-11571, A-25540
- Dexter: 1005503
- Eaton: 821601
- Spicer-Dana: 504859, M10HH107, M10HH153
- Timken: K154146
- Navistar: 1649628C1
- National: 380025A, 455211
- Boss Seals: B370025, B46304, B46305
- Great Dane: 42478
- Trailmobile: 4131150, 4131162, 4131212, 4131235, 60501012, 90501017
- Triseal: 65060U, 65060W, 69589, 70598
- Victor Reinz: 48086, SS64236, SS68003, SS68008
- Volvo / GMC / Western Star: 720659, 940010006, 940013409, 940013410, 940013412
- NOK: 303, 859, UZ0303E0
- Pioneer Weston: 303100, 303403
- Strick: R20148222
- Westport: 1436900007
Applications
This wheel seal fits the following axles:
- Meritor TN-series trailer axles, 22,500 lb capacity (oil-bath hub)
- Standard Forge, Dana, and Eaton 22,500 lb trailer axles using HM218 / HM212 bearings
Representative trailers using these axles:
- Great Dane, Wabash, Utility, and Hyundai dry vans and reefers
- Strick, Trailmobile, and Stoughton trailers
- Heil, Polar, and Brenner tank trailers
For matching alternative trailer-axle wheel seals, see RevHD R1-T03 and RevHD RM-T03.
Verify your axle model and bearing series before ordering to confirm fitment.
