Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1402K-03 found under Parts Kitseal Replacementmecha by Sargent Welch Scientific Co. The National Stock Number assigned to this part is 5330012331707, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1402K-03.