Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1 4 OD X 1 8 I.D. TFE TUBING found under Tubing Nonmetallic by Zeus Industrial Products Inc. The National Stock Number assigned to this part is 9330013559701, and the Federal Supply Class is 9330 Plastics Fabricated Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1 4 OD X 1 8 I.D. TFE TUBING.