Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 534591 found under Parts Kit Seal Mechanical Equipment by Caterpillar Inc. The National Stock Number assigned to this part is 5330013119384, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 534591.