The JCB 904M8511 is a genuine FKM (Fluoroelastomer) cassette seal designed for heavy-duty applications. This high-performance seal features an outer diameter of 190mm, an inner diameter of 165mm, and a width of 15mm, ensuring a precise fit and superior sealing capabilities. It is engineered to withstand harsh operating conditions, providing excellent resistance to high temperatures, chemicals, and abrasives. This essential component maintains optimal performance and extends the lifespan of various JCB excavator models, including JS200, JS220, JS260, and JS330 series.