Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TG 4 0 125F 01B 0 found under O Ring by Core Industries Inc. The National Stock Number assigned to this part is 5331013050667, 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 TG 4 0 125F 01B 0.