Oil Seal for Dexter 12K Heavy Duty Axle with Disc Brakes
Updated 10/25/2025 | Published 01/02/2019
Question:
Is this what I need for dexter 12k oil bath with disc hubs? Is there a unitized seal available? Thanks
asked by: TJ
1
Helpful Expert Reply:
Yes, the Oil Seal part # 10-56 is exactly what you need for your Dexter 12K Heavy Duty axle with disc brakes. If you wanted to be absolutely certain you could measure the inner and outer diameter of the one you have now and it should be 3.125" and 4.500" respectively.
expert reply by:
Conner L
1
Product Page this Question was Asked From
- Trailer Bearings Races Seals Caps
- Seals
- Oil Seals
- 3.13 Inch I.D.
- 4.50 Inch O.D.
- Redline
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Gary D.
10/21/2025
I have 12k dually axles that have the black threaded grease caps and inner grease seals. I'm considering ordering the 10-56 oil seals and converting to oil. However, they have disc brakes. I've heard those brakes run hotter and it will melt the rubber in these seals causing them to leak. Is this combination not recommended? Thanks