The JCB 02630772 is a genuine OEM rear crankshaft oil seal specifically designed for JCB Dieselmax engines, including the JCB 444 engine (Tier 2 and Tier 3 variants). This essential component ensures a robust seal at the rear of the crankshaft, effectively preventing oil leaks and maintaining optimal engine performance and longevity. It is widely compatible with various JCB machinery, such as 3CX and 4CX backhoe loaders, a range of Loadall telehandlers (e.g., 531-70, 535-95, 540-140), and Fastrac tractors (e.g., 3230, 7230, 8250). The seal features an inner diameter of 150mm, an outer diameter of 170mm, and a thickness of 12mm, with a weight of approximately 0.12 kg.