Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SEIKIT2-REVB found under Sound Controlling Batt by Soundcoat Company Inc The. The National Stock Number assigned to this part is 5640016071988, and the Federal Supply Class is 5640 Wallboard Building Paper And Thermal Insulation Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SEIKIT2-REVB.