Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4C00004-105A found under Seal Set Pressure by Yama Mfg Co Incorporated. The National Stock Number assigned to this part is 1560001131845, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4C00004-105A.