Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E27-25-75C found under Filter Element Air Conditioning by George Evans Corporation The. The National Stock Number assigned to this part is 4130002627110, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E27-25-75C.