Difference Between Oil and Grease Seals

Updated 09/05/2023 | Published 09/03/2023

Question:

Hello, Is there difference in a seal for an oil bath hub and a grease filled hub? Thank you!

asked by: Dan F

Helpful Expert Reply:

Yes, there is a difference between an oil seal and a grease seal for trailer hubs. Oil seals have a much tighter fit on the spindle to keep the oil from leaking out. An oil seal can be used with grease but a grease seal cannot be used with oil. The Kodiak XL ProLube Kit # XLPROLUBE1980KIT you were looking at comes with oil seals and oil bath caps and would allow you to convert from grease to oil on 3,500 lb axles.

expert reply by: Robin H