Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 14900043 found under Strap Respirator by Survivair Corp. The National Stock Number assigned to this part is 4240012508283, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 14900043.