UFP Replacement O-Ring – 2.125" Spindle – 5.2K–7K Trailer Axles (32738U)
Part Number: 32738U
Replacement O-ring for 2.125" spindle applications used on 5.2K–7K trailer axles. Designed to maintain a proper seal between the wear sleeve and hub, preventing grease or oil leakage.
R&P Knowledge Hub
Compatibility: Designed for UFP-style hub systems that use a wear sleeve and O-ring sealing interface.
Vehicle / System Fit: Common on 5,200 lb to 7,000 lb trailer axles with a 2.125" spindle seal surface.
Installation Notes: O-ring must be installed clean and undamaged. Always inspect the wear sleeve and spindle surface before reassembly.
Performance Insight: A worn or damaged O-ring is a common cause of hub leaks. Replacing it restores proper sealing and protects bearings from contamination.
Features
- Direct replacement O-ring for UFP hub seal systems
- Maintains proper sealing between wear sleeve and hub
- Helps prevent grease or oil leakage
- Ideal for maintenance or hub service repairs
Specifications
| Specification | Detail |
| Type | Replacement O-Ring |
| Application | Hub Seal / Spindle Seal Interface |
| Fitment | 2.125" Spindle |
| Material | Rubber |
| Axle Rating | 5.2K – 7K Trailer Axles |
| Part Number | 32738U-1 |
Fitment / Application
| Category | Details |
| System Type | UFP / Oil Bath / Grease Hub Systems |
| Axle Capacity | 5,200 lb – 7,000 lb |
| Notes | Often replaced during seal or wear sleeve service |
Included Components
| Quantity | Item |
| 1 | O-Ring |
Verify spindle size, seal type, and compatibility before installation.
