196-5544, RS PRO, RS PRO Nitrile Rubber O-Ring O-Ring, 15.1mm Bore, 18.3mm Outer Diameter, Brand RS Pro, Type O-Ring, Material Nitrile Rubber, Inside Diameter 15.1mm RS PRO Nitrile Rubber O-Ring O-Ring, 15.1mm Bore, 18.3mm Outer Diameter