Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LR-125042 PIECE 12 found under O Ring by R And M Energy Systems Tomball P. The National Stock Number assigned to this part is 5331012926343, 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 LR-125042 PIECE 12.