Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2075 2.39OD X 1.66ID X 0.38IN found under O Ring by Sur Seal Inc. The National Stock Number assigned to this part is 5331013340366, 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 2075 2.39OD X 1.66ID X 0.38IN.