Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL-1768 PIECE 2 found under O Ring by Alfred Conhagen Inc. The National Stock Number assigned to this part is 5331014418275, 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 PL-1768 PIECE 2.