Keep your trailer running smoothly and extend the life of your axle components with the Abbyisd Trailer Axle Oil Seal 4-Pack. This essential maintenance kit is precisely engineered for trailers requiring 3.38" OD and 2.25" ID seals, offering a reliable and durable solution for both professional mechanics and DIY enthusiasts. The primary function of these seals is to create a impermeable barrier that retains the crucial grease within the wheel hub while aggressively preventing harmful contaminants from entering the bearing assembly. This is vital for preventing premature bearing failure, costly repairs, and potential safety hazards on the road. Crafted from premium nitrile rubber and a sturdy metal casing, our seals are built to endure the high pressures, temperatures, and stresses of heavy-duty towing. With a load capacity of 8000 lbs, they are ideal for utility trailers, boat trailers, and other medium-duty applications.