Federal Mogul 375023A Red 375 Series Oil Bath Wheel Seal

The Federal Mogul 375023A is a premium oil bath wheel seal from the National Red 375 Series, featuring advanced DYNAMIC EDGE® technology for superior protection in heavy-duty applications. This hand-installable seal is one of the most popular part numbers in the 375 Series lineup, designed to deliver reliable sealing performance while eliminating the need for special installation tools.

Key Features:

• Long lead-in pilot aids initial installation for easier setup
• Unique four-rib sawtooth profile engineered to deflect dirt and moisture
• Four floating points of contact deflect contaminants while eliminating the need for installation tools
• Same proven nitrile rubber compound used in Red 37 Series, now configured for hand installation
• Patented sinusoidal wave creates a pumping action to aggressively push dirt away from the seal
• Temperature range: -40°F to 225°F (-40°C to 107°C)
• Spring-loaded main lip for positive sealing with reduced shaft interference
• Patented SURE-LOCK® rubber ribs on inner and outer diameters prevent shaft leaks and bore contamination

The unitized construction provides greater structural integrity, easier installation, and main lip protection, while the abrasion-resistant nitrile material ensures long-lasting performance in demanding conditions. This seal is suitable for oil bath configurations requiring minimal fluid loss over long cycles, with a nitrile lip configured for both flexibility and abrasion resistance, making it ideal for vehicles exposed to dusty routes, aggregate yards, or extended highway operation.

National has built a reputation as one of the most respected names in the industry, offering premium sealing solutions for more than 75 years. This seal supersedes part number 370023A and provides reliable protection for wheel end components in heavy-duty truck, trailer, and commercial vehicle applications.