STAUFF return line bushing type RF (fixed to the tube). Manufactured from polypropylene PP and elastomer SA. Guides and centers a tube in a through bore (e.g. for the transition of a return line into a tank/container). Vibration-damping and noise-reducing properties. Available for all common line diameters of between 6 and 42 millimeters (1/4"-1 1/2"). Simple plug-in assembly without the need for a tool.