Get Ready for the Road Ahead™ with enhanced axle protection and lubricant leakage prevention with the National 380048A Gold 38 Series Wheel Seal for 16,000 lb Front Mack Axles. To lock in lubricant and prevent contaminants from entering your wheel, this replacement wheel seal tightly fits inside the hub assembly. Fashioned with heat and weather-resistant rubber for optimal performance and durability in harsh climates. FleetPride is your First Click in Heavy Duty®.