Overview Reviews Product Description Vibrant Performance HD Clamp Weld Ferrules are available in 6061 Aluminum, 304 Stainless Steel and now also available in CP2 Grade Titanium. Each Weld Ferrule includes an O-Ring Seal. Product Videos Custom Field Product Reviews Write a Review Write a Review × Vibrant Vibrant HD Weld Ferrules with O-Rings for 3.50" O.D. Tubing Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *