Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PSI-30-5 2-366 found under O Ring by Parker Hannifin Ltd. The National Stock Number assigned to this part is 5331011449708, 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 PSI-30-5 2-366.