Military Sealift Command has a requirement to procure Shaft Bearing in support of the USNS ARCTIC (T-AOE 8) for the Sole Source material listed in the attachment. Original Equipment Manufacture (OEM) ... Military Sealift Command has a requirement to procure Shaft Bearing in support of the USNS ARCTIC (T-AOE 8) for the Sole Source material listed in the attachment. Original Equipment Manufacture (OEM) parts are required. Any offer other than OEM parts will not be considered. See attached SSJ.