Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 101188 PIECE 12 found under O Ring by Service Brass And Aluminum Foundry Co. The National Stock Number assigned to this part is 5331002483835, 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 101188 PIECE 12.