Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11-109-000 ITEM 14 found under Mouthpiece Regulator by Under Sea Industries Inc. The National Stock Number assigned to this part is 4220011963447, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11-109-000 ITEM 14.