This Vibrant AL V-B Flange Assembly is designed for 3.5in OD tubing and includes two aluminum V-band flanges, one stainless steel V-band clamp, and one Viton O-ring. The aluminum V-band flanges are designed to provide a secure connection between the tubing and the V-band clamp. The stainless steel V-band clamp is designed to provide a secure seal, while the Viton O-ring helps to ensure a tight seal between the flanges. This assembly is ideal for applications requiring a reliable connection and a tight seal.