Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S-HS530 found under Seal Assembly Shaft Spring Loade by Specialty Seals And Accessories Inc. The National Stock Number assigned to this part is 4320015266940, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S-HS530.