Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 241-0.75IN PG8 IT8 found under Back Up Ring Prefor by Ernst John C And Co Inc. The National Stock Number assigned to this part is 5330015467681, 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 241-0.75IN PG8 IT8.