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370352A

OIL BTH SEAL

This is a National 370352A oil bath wheel seal, part of their Red 37 Series. It's designed to keep the axle lubricant inside the hub and to stop dirt, water, and other contaminants from getting into the wheel bearings on heavy-duty trucks and trailers. You replace this seal whenever you service the wheel bearings or if you notice an oil leak around the hub. This unitized, nitrile seal uses a spring-loaded main lip and patented SURE-LOCK ribs on the inner and outer diameters to create a reliable, long-lasting barrier.