Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RB8026C found under Valve Check by Lear Siegler Inc. The National Stock Number assigned to this part is 4820005293879, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RB8026C.