A direct-fit replacement for trailer axle hub grease seals on Lippert, Dexter, and Al-Ko axles rated from 1,250 to 8,000 lbs. The double lip design blocks road grime, water, and contaminants from reaching your wheel bearings while keeping grease where it belongs. Service part number 139514.
Wheel bearing failure is one of the most preventable -- and most costly -- roadside problems on a trailer. Worn or cracked grease seals allow bearing grease to escape and let water and road debris contaminate the hub, accelerating bearing wear and risking complete hub loss. These Lippert double lip seals are the OEM-spec replacement to restore a proper seal during any bearing repack or hub service.
Each seal uses a dual-lip rubber construction that creates two independent barriers: the primary lip retains the bearing grease inside the hub, while the secondary lip deflects external contaminants. The rigid outer shell presses firmly into the hub bore for a leak-free, shake-resistant fit.
Two sealing lips work together -- one retains grease inside the hub, the other blocks water, dirt, and grime from entering.
Fits Lippert, Dexter, and Al-Ko trailer axle hubs with capacities ranging from 1,250 lbs to 8,000 lbs per axle.
Referenced as service part 139514 in Lippert axle documentation -- a direct replacement, no machining or modification required.
Sold as a pair so you can service both hubs on a single axle at the same time, the recommended practice for any bearing repack.
Grease seals should be inspected at every bearing repack and replaced any time you see:
These seals are pressed into the inboard side of the hub bore. Standard practice during a bearing repack:
This seal size is common across a broad range of trailer axles. Confirmed or typical applications include:
If you are cross-referencing from an existing seal, look for "1.500 x 1.987" or the service part number 139514 stamped on your current seal.