At a Glance

> 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.
> 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.
Brand: Need A Trailer Part®
SKU: 33522+32736

Before You Order

Match the part number, measurements and connection points that apply to your trailer.

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

UFP Axle Seal Surface Component

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.

Part Numbers: 33522U + 32736 Approx. 1.68" OD Wear Ring Wear Ring + O-Ring

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

Important Fitment Note: Verify your axle brand, existing wear ring size, hub seal system, spindle hardware, and whether your axle requires a sleeve with or without a lubrication hole before installation. This part is not a universal spindle repair sleeve and should only be used on compatible UFP-style applications.

View More UFP Axle Components

UFP 33522U spindle wear ring, 32736 O-ring, UFP stainless spindle sleeve, UFP wear ring with O-ring, 1.68 OD spindle wear sleeve, UFP trailer axle seal surface sleeve, UFP 3500 lb axle wear ring, UFP 4200 lb axle wear ring, boat trailer spindle wear ring, UFP axle hub seal sleeve, no lube hole spindle sleeve

UFP Stainless Steel Spindle Wear Ring with O-Ring – Fits Select 3,500-4,200 lb UFP Trailer Axles (33522+32736)