Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T3101-1 found under Boot Dust And Moisture Seal by The Biro Manufacturing Company. The National Stock Number assigned to this part is 5930012309201, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like T3101-1.