Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TYGON B-44 found under Tubingnonmetallic by Saint Gobain Performance Plastics. The National Stock Number assigned to this part is 4720010239264, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TYGON B-44.