Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AS3085-020AMS 7280 found under O Ring by Society Of Automotive Engineers Inc. The National Stock Number assigned to this part is 5331001661001, 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 AS3085-020AMS 7280.