Get Ready for the Road Ahead™ with enhanced axle protection and lubricant leakage prevention with the National 370047A Red 37 Series Wheel Seal. With a snug design that gently fits inside the hub assembly, this replacement wheel seal locks in lubricant while preventing contaminants from entering the wheel. Manufactured with weather and heat-resistant rubber for optimal durability and performance in harsh climates. FleetPride is your First Click in Heavy Duty®.