Vibrant Performance 1494F VIB1494F STAINLESS STEEL V BAND FLANGE FOR Vibrant Performance VIB11490F XPX Aluminum V Band Flange 4" 4.0" Aluminum VBand V Band Clamp Flange Kit o ring oring Turbo V Band Flanges : Jay Racing Vibrant 11491 3" Aluminum V Band Flange Assembly XDP. Vibrant Performance v band flanges are constructed entirely from a 300 series stainless steel clamp that features a unique quick release clamping mechanism, and a unique male female 6061 aluminum flange design to ensure proper alignment inside the clamp. Vibrant Performance aluminum v band flanges are an excellent alternative to traditional under the hood silicone coupler connections, offers a solid, leak free connection with a built in FKM rubber O Ring and work well under operating conditions involving stress, vibration and temperatures that do not exceed 350deg F. They are available in diameters that support O. D. tubing ranging from 2 to 4.