In this technical overview, we examine the Komatsu 421-22-32460 dust seal used in WA400/430/450/470 wheel loader final drives. You'll see how this critical component prevents hydraulic fluid leakage and contamination ingress, with detailed insights into its construction, material specifications, and proper installation context within the axle assembly. Gain practical understanding of why OEM-quality seals matter for maintaining equipment performance and longevity in demanding conditions.