Flange Facers Flange facing is the process of resurfacing flanges by machining new mating surfaces to ensure a perfect seal when assembled. Utilizing the E.H. Wachs FF series flange facing machines anyone can produce a lathe quality record groove, RMS 500, 250, 125 & 63 surface finish on flat, raised or recessed face flanges in minutes. Based on the powerful Wachs SDB series I.D. mount end prep machines, the Wachs FF series flange facers offer a rugged, lightweight and compact design that allows them to fit into elbows and tight quarters. With the addition of the SDB Conversion Kit, the FF models can be converted into SDB series machines, giving them the ability to face, bevel, compound bevel and counterbore.