National 380003A Wheel Seal – Gold 38 Series High-Temp Wheel End Seal

Premium wheel-end sealing for demanding fleets

National offers the 380003A Wheel Seal as part of the Gold 38 Series, engineered for reliability under tough working conditions. Built on a legacy of more than 75 years, this seal blends advanced materials with thoughtful design to provide robust protection at the wheel end. Expect a seal that performs across a wide range of temperatures and helps keep contaminants out where they matter most.

Key benefits at a glance

• Triple barrier system for enhanced debris exclusion and long-term sealing integrity
• Proprietary PTFE compound with low friction for smoother operation and reduced wear
• Patented lay-down bi-directional sealing lip, increasing sealing surface during wheel-end movement
• Broad temperature tolerance from -100°F to 450°F (-73°C to 232°C) for diverse environments
• Compatibility with mixed lubricants, aiding durability in mixed fleet applications

Designed for a wide range of heavy-duty applications

The National 380003A wheel seal is compatible with several Isuzu and GM-based vehicle families, including late-model and vintage configurations. This versatility makes it suitable for fleets and service operations that rotate between multiple equipment types.

• Isuzu: 1995-2011 FTR; 1995-2004 FVR; 2005-2007 HTR; 2005-2008 HVR
• Chevrolet: 1997-2009 C6500 Kodiak; 1997-2009 C7500 Kodiak; 1997-2006 T6500; 1997-2009 T7500
• GMC: 2003-2009 C6500 Topkick

How to verify fit before you order

Before purchasing, use the Amazon Confirmed Fit bar to confirm compatibility. Enter year, make, model, engine and trim, and review any notes. If the bar shows an information icon, hover to view additional details before you check out.

Real-world use and expected benefits

In daily fleet service, the seal helps restrict debris intrusion and reduces friction at wheel ends, contributing to consistent sealing performance across varied road conditions. While this does not guarantee specific results, it is designed to support dependable operation in demanding environments.

• Clean wheel ends and reduced contamination risk in dusty or wet weather
• Stable sealing surface during wheel-end movement for ongoing reliability
• Broad compatibility with mixed lubricants to support diverse maintenance fleets

Why choose National

National backs its Gold 38 Series with a commitment to advanced sealing technology and fleet-focused design. This wheel seal represents a blend of proven performance and modern materials tailored for today’s vehicles, helping you meet daily service demands with confidence.