Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PMI-0452-2 ITEM 14 found under O Ring by Pmi Technologies Inc. The National Stock Number assigned to this part is 5331014137828, 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 PMI-0452-2 ITEM 14.