RF - Raised Face: Sealing faces with a standard roughness "Stock Finish" 125-250 AARH to B16.5 RFSF - Raised Face Smooth Finish: < 125 AARH (not defined in B16.5) RTJ - Ring Joint Groove/RJF Ring Joint Face < 63 AARH to B16.5 Obsolete descriptions were in accordance with ANSI: - Stock Finish 250-500 AARH - Smooth Finish 125 -250 AARH - Mirror Finish - Cold water finish without definition of the roughness.