Update your semi with enhanced axle protection and lubricant leakage prevention, with the National 380036A Gold 38 Series Wheel Seal for 19,000 lb Trailer Axles that ensures you're Ready for the Road Ahead™. Thanks to a snug design that fits inside the hub assembly, this replacement wheel seal prevents contaminants from entering the wheel, while locking in the lubricant. Crafted with heat and weather-resistant rubber for optimal performance and durability in rugged climates FleetPride is your First Click in Heavy Duty®.