UFP Stainless Steel Spindle Wear Ring with O-Ring – Fits Select 3,500-4,200 lb UFP Trailer Axles
Replacement stainless steel spindle wear ring and sealing O-ring for compatible UFP trailer axle applications originally equipped with a factory-style spindle wear sleeve.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Numbers | 33522U wear ring + 32736 O-ring |
| Brand / Application | UFP trailer axle applications |
| Product Type | Spindle wear ring / seal surface sleeve with O-ring |
| Primary Measurement | Approx. 1.68" outside diameter wear ring |
| Material | Stainless steel wear ring with rubber O-ring |
| Quantity Included | 1 wear ring and 1 O-ring |
Fitment / Application
| Category | Details |
|---|---|
| Trailer / System | Boat trailer and utility trailer axle hub systems using compatible UFP spindle wear sleeves |
| Primary Fit | Select UFP 3,500-4,200 lb axle applications originally equipped with this style of wear ring |
| Fitment Method | Verify existing wear ring size, axle brand, hub/seal system, and spindle hardware before ordering |
| Important Note | This is not a universal spindle repair sleeve. Use only where the axle originally used this factory-style wear ring. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Stainless Wear Surface | Provides a smooth sealing surface for compatible grease or oil seal systems |
| Includes O-Ring | Supplies the matching O-ring needed with the wear ring installation |
| UFP Application Fit | Intended for compatible UFP axle setups, not generic trailer spindles |
| No Lube Hole | Matches applications requiring a wear ring without a lubrication hole |
Overview
This UFP stainless steel spindle wear ring with O-ring is used on compatible trailer axles where the hub seal rides on a replaceable sleeve instead of directly on the spindle surface. It is intended for UFP axle applications that originally came with this style of wear ring from the factory.
R&P Service Insight
The wear ring is a sealing surface component. Correct fitment depends on the original axle design, not just the axle weight rating.
- Confirm UFP axle style: Match the existing wear sleeve and spindle hardware before ordering.
- Check the seal surface: A damaged, loose, or incorrect wear ring can cause grease or oil seal problems.
- Install evenly: Drive the new sleeve on squarely to avoid distortion or seal-contact issues.
R&P Knowledge Hub
Compatibility: This part is for select UFP axle applications that use a stainless spindle wear ring with an approximate 1.68" outside diameter sealing surface.
Vehicle / System Fit: Commonly associated with UFP 3,500-4,200 lb trailer axle hub and seal systems, but axle construction must be verified before ordering.
Installation Notes: The old sleeve is typically removed from the spindle before the new wear ring is installed. Removal may require carefully cutting the old sleeve off the spindle without damaging the spindle surface.
Performance Insight: The hub seal depends on a clean, smooth wear-ring surface. Installing the wrong sleeve or reusing a damaged sleeve can lead to premature seal wear or leakage.
Brand & Fitment Note
Selling Brand / Application Reference: UFP is used here as the axle and part-number application reference for 33522U and 32736.
Application Reference: UFP axle references describe compatible axle applications only. Verify your axle, hub, seal, and spindle hardware before purchase.
What This Means: This listing is for one stainless steel spindle wear ring and one O-ring. It is not a complete hub kit, bearing kit, grease seal kit, or spindle repair kit.
Before Ordering: Confirm the axle brand, wear ring size, existing sleeve style, seal system, and whether your application requires a sleeve with or without a lubrication hole.
R&P Repair Insight
This wear ring is intended to replace the sleeve used on compatible UFP spindle assemblies. It should not be selected as a universal repair sleeve for worn or damaged non-UFP spindles.
- Check the old sleeve: Match the old wear ring style, approximate diameter, and O-ring arrangement before installation.
- Check for lube-hole requirements: This sleeve does not have a lubrication hole. Do not use it where a lube-hole sleeve is required.
- Check related parts: Inspect the hub seal, bearings, spindle surface, and axle nut hardware while the hub is apart.
Features
Stainless Steel Wear Ring
Creates a dedicated seal-contact surface for compatible UFP hub and spindle assemblies.
Matching O-Ring Included
Includes the rubber O-ring used with the wear ring installation.
UFP Axle Application
Designed for compatible UFP trailer axles originally equipped with this style of spindle wear sleeve.
No Lubrication Hole
Correct for applications requiring the non-lube-hole version of this UFP-style wear ring.
Included Components
| Quantity | Item |
|---|---|
| 1 | UFP stainless steel spindle wear ring / sleeve, part number 33522U |
| 1 | Rubber O-ring for wear ring, part number 32736 |
| Not Included | Hub, bearings, grease seal, axle nut, cotter pin, retaining hardware, or installation tools |
