Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 431127B found under Parts Kit Seal Replacement Mecha by Oldenburg Group Incorporated. The National Stock Number assigned to this part is 5330015937521, 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 431127B.