Caterpillar 5K-1078 Seal GP-DUO-Cone

Caterpillar 5K-1078 Seal GP-DUO-Cone is a Cat final-drive seal in the Duo Cone family, cataloged as 5K-1078. It specifies an inside diameter of 153.60 mm and is designed as a GP‑DUO‑Cone seal for rotating drive components. Cat describes Final Drive Duo Cone seals as maintaining an oil-tight seal during rotation in intense applications where misalignment may occur, a key requirement for reliable lubrication retention in demanding equipment. The 5K-1078 seal provides a precise fit for Cat final-drive assemblies that call for a 153.60 mm ID Duo Cone seal, helping prevent leakage and protect the lubricant path under load and speed conditions. As a genuine Caterpillar replacement part, it adheres to Cat's engineering standards for seal geometry and material tolerances, ensuring compatibility with Cat final-drive housings and shafts specified for GP‑DUO‑Cone seals. This part is listed on Cat’s Parts Store under 5K-1078, offering a straightforward option for maintenance or overhaul of Caterpillar machinery that relies on Duo Cone sealing in the final drive.