Vibrant Stainless Steel Weld Fitting w O Rings for 5in OD Tubing Stainless Steel High Pressure Orbital Weld Fittings, Valve Size: 2 inch Vibrant Performance 12545R VIB12545R REPLACEMENT O RING FOR 2 1 2IN Stainless Steel High Pressure Orbital Weld Fittings, Valve Size: 2 inch Orbital Weld Fittings and SS Orbital Weld Sanitary Tube Fittings Parker. Vibrant Performance clamping systems are an excellent alternative to traditional flanged, or silicone connections in both aluminum and stainless steel charge piping. Our clamping systems have earned the trust of industry professionals throughout the world due to their outstanding quality.