Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LJ-106202 PART 12-40 found under O Ring by Curtiss Wright Corp. The National Stock Number assigned to this part is 5331012870231, 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 LJ-106202 PART 12-40.