At a Glance
- >Genuine USA-made Dexter seal
- >Unitized dual-action oil seal design
- >Designed for oil bath hub assemblies
- >Common on 7K–8K Dexter axles
- >Four seals included (two axle set)
- Brand: Need A Trailer Part®
- SKU: 10-63-4
Before You Order
Match the part number, measurements and connection points that apply to your trailer.
Fitment Check
| Part Number | Match the number stamped on the original bearing or seal. |
|---|---|
| Dimensions | Measure the mating surfaces when a number is unavailable. |
| Hub / Axle | Use capacity as context, not as the only fitment check. |
Product Details
(4) Dexter 2.255" x 3.38" Unitized Oil Seals – 7K–8K Oil Bath Axles
RP Part Number: 10-63-4
Dexter Reference: 010-063-00 (10-63)
Dexter Reference: 010-063-00 (10-63)
Four genuine USA-made Dexter unitized oil seals designed for7,000 lb and 8,000 lb oil bath trailer axles.Includes four seals — enough for two axles.
These seals are commonly used in Dexter oil bath hub assembliesand are not interchangeable with grease-style hub seals.
R&P Knowledge Hub
A unitized oil seal is a dual-action assembly where the inner caseremains fixed on the spindle while the outer case rotates with the hub.This design minimizes wear between sealing surfaces and improvesoil retention in oil-bath hub systems.
7K and 8K axles may use different seal sizes depending on hub configuration.Always confirm inner diameter and outer diameter measurements before ordering.
Features
- Genuine USA-made Dexter seal
- Unitized dual-action oil seal design
- Designed for oil bath hub assemblies
- Common on 7K–8K Dexter axles
- Four seals included (two axle set)
Specifications
| Specification | Detail |
| Inner Diameter | 2.255" |
| Outer Diameter | 3.38" |
| Seal Type | Unitized Oil Seal |
| Typical Axle Rating | 7,000 lb – 8,000 lb (Oil Bath) |
| Quantity | 4 Seals |
Verify hub type (oil bath vs grease) and seal dimensions before installation.
