Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8218690 found under Retainer Seal by Sicard A Division Of Smi Snowblast. The National Stock Number assigned to this part is 5330001371833, 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 8218690.