Vibrant AL V-B Flange Assembly for 4in OD Tubing incl 2 AL V-b flanges 1 SS V-B Clamp 1 Viton O-RingVibrant Performance V Band Flange Assemblies are the choice of industry professionals and offer an excellent Quick Release alternative to traditional flanged or slip fit tube connections. Our V Band Assemblies provide a gasket free seal thanks to our signature Male Female flange design and superior positive retention compared to other tube coupling options. Each full assembly includes two (2) V Band Flanges and one (1) V Band Clamp. Catalog