Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 002-000 0100-0-190A4 found under O Ring by Seepex Inc. The National Stock Number assigned to this part is 5331123483718, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 002-000 0100-0-190A4.