Looking For Replacement Grease Seal For Older Utility Trailer
Updated 05/05/2026 | Published 05/04/2026
Question:
I inherited an older utility trailer. It has a single axle with 6 lug hubs. I’m trying to find the correct seals to repack the bearings. The current seal is stamped “Trostel” and “300 156 6F”. The inner bearing it seals is a Bower 2788. The seal is 3” OD, 1.9” ID, and about 0.39” thick. This is an axle with a larger inner bearing and smaller outer bearing. The axle is 0.95” on the outer end and 1.5” on the inside. If it helps, the outer bearing is a smaller bearing stamped Bower USA but the numbers are worn off. It looks like 1779 but that could be wrong. Any help is appreciated! Thank you!
asked by: Travis E
Expert Reply:
Hello Travis, thanks for reaching out. We do have a grease seal that is very close to the dimensions you listed, although we don't have an exact match. Take a look at the following:
- Grease Seal 29031 # 29031
This is 3" OD, 1.875" ID and 0.5" thick. A lot of older trailers use oddball/obsolete bearing and seal sizes, and it sounds like that might be the case here, but this seal will be the closest we have to what you need. If you're having a hard time finding a seal replacement it's definitely worth a shot.
What kind of trailer is it? Any idea when it was made?
(click to enlarge)
Product Page this Question was Asked From
Grease Seal - Single Lip - I.D. 1.875" / O.D. 3.00" for Older 5.2K Axles - Qty 1
- Trailer Bearings Races Seals Caps
- Seals
- Grease Seals - Single Lip
- 1.88 Inch I.D.
- 3.00 Inch O.D.
- Redline
more information >
Continue Researching
- Shop: Trailer Axle Beam with Easy Grease Spindles - 95" Long - 5,200 lbs
- Shop: Grease Seal - Single Lip - I.D. 1.875" / O.D. 3.00" for Older 5.2K Axles - Qty 1
- Shop: Replacement Race 1729 for Bearing 1779 - Qty 1
- Shop: Replacement Race 2729 for Bearing 2788 - Qty 1
- Shop: Timken Replacement Trailer Wheel Bearing - 2788 - Qty 1
- Shop: Timken Replacement Trailer Wheel Bearing - 1779 - Qty 1
- Shop: Replacement Trailer Wheel Bearing - 25580 - Qty 1
- Q&A: Possible Replacement for Trostel 300-156-6 Seal
- Q&A: Old Trailer has 2 Different Sized Spindles and Obsolete Bearing and Seal Numbers
- Q&A: How Does Grommet for Optronics Taillight # A91GB Install
- Q&A: How To Attach Safety Chains To Trailer Tongue
- Q&A: Grease Seal That is Compatible With Bearing 2788
- Q&A: Can Old Grease Seals Be Reused When Changing Trailer Bearings
- Search Results: trailer hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Article: Trailer Wiring Diagrams
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer tires and wheels
- Search Results: trailer wiring
- Article: How to Measure for Trailer Hitch Drop
- Video: How to Choose a Trailer Brake Controller
- Video: Measuring To Choose The Right Trailer Axle
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer jack
- Shop: Brake Controller
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer lights
- Search Results: trailer leaf springs
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
on Trailer Bearings Races Seals Caps
Travis E.
5/5/2026
Thanks! I will try this seal. The old seal is felt lined so my ID isn’t exact.