The McCormick 3405258R1 is a high-quality sealing ring, also known as an oil seal or joint SPI, with precise dimensions of 100mm inner diameter, 125mm outer diameter, and 13mm thickness. This essential component ensures a tight seal, preventing leaks and maintaining optimal performance in various agricultural and industrial applications. It is an OEM equivalent part, cross-referenced for McCormick, Landini, Case IH, New Holland, Massey Ferguson, and Argo Tractors, ensuring broad compatibility and reliable operation across numerous tractor series.