• Mating Vic-Flange Adapters to rubber faced flanges, valves, etc. requires the use of a Vic-Flange Washer. Refer to the "Vic-Flange Washer Notes" section below. • The lettering on the outside of the gasket must face the gasket pocket of the Vic-Flange Adapter. When installed correctly, the lettering on the gasket will not be visible.