The JCB 90420354 is a genuine OEM shaft sealing ring, also known as a lip seal, specifically designed for various JCB machinery applications. This critical component ensures effective sealing of rotating shafts, preventing fluid leaks and ingress of contaminants, thereby maintaining optimal operational integrity and extending equipment lifespan. It is commonly used in JCB 3CX and 4CX backhoe loaders. The seal features an internal diameter of 50 mm, an outer diameter of 72 mm, and a height of 10 mm, providing a precise fit and durable performance.