Keep axle grease in and road contamination out. These Lippert OEM-spec double lip grease seals are a direct replacement for worn or damaged hub seals on Lippert, Dexter, and Al-Ko trailer axles rated from 1,250 to 8,000 lbs. Sold as a convenient two-pack so you can service both sides of an axle in a single job.
A failing hub seal is one of the most common -- and most avoidable -- causes of trailer wheel bearing failure. Once the seal lip wears or cracks, bearing grease migrates outward onto the brake drums or rotors while road grit, water, and dirt push inward past the hub. The result is accelerated bearing wear, potential brake contamination, and a roadside breakdown.
The Lippert 333960 double lip seal uses two sealing lips to create a more robust barrier than a single-lip design. The outer lip blocks incoming contaminants; the inner lip retains grease. Together they protect the wheel bearing through the full range of axle loads this seal is rated for.
Two sealing lips provide dual protection -- one retains grease, one blocks dirt, water, and road debris from reaching the bearing.
Fits Lippert, Dexter, and Al-Ko trailer axle hubs across a wide capacity range from 1,250 to 8,000 lbs.
Reference/service part number 122087 confirms OEM fitment for Lippert axle assemblies. No modification required for a direct swap.
Includes two seals so you can replace both sides of a single axle at the same time -- the recommended service practice.
This seal is the correct replacement if your RV trailer, fifth wheel, or travel trailer rides on a Lippert, Dexter, or Al-Ko axle with a hub bore that accepts a 1.72" ID / 2.565" OD seal. It is commonly used on axles in the 3,500 lb, 5,200 lb, 6,000 lb, and 7,000 lb single-axle ratings, as well as tandem configurations with per-axle ratings that fall within the 1,250--8,000 lb window.
Always confirm your existing seal dimensions before ordering. The ID and OD must match your hub bore and axle spindle exactly; a seal that is even slightly undersized or oversized will not seal correctly.
Seals on both ends of a trailer axle typically experience the same mileage and wear. If one seal has failed or is showing cracks, the other is likely close behind. Replacing both together with a single 2-pack avoids a repeat job on the side of the road -- or in a campground.
Lippert and Dexter both recommend inspecting wheel bearings and hub seals annually or every 10,000--12,000 miles of towing, whichever comes first. High-humidity environments, salt-road regions, or frequent water crossings may warrant more frequent inspection.
Covered by Lippert's limited 1-year manufacturer warranty against defects in materials and workmanship.