Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 67187-B-304SS-1.0IN-PC14 found under Packing Assembly by William Powell Company The. The National Stock Number assigned to this part is 5330010035996, 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 67187-B-304SS-1.0IN-PC14.