196-5384, RS PRO, RS PRO Nitrile Rubber O-Ring O-Ring, 2.2mm Bore, 4.2mm Outer Diameter, Brand RS Pro, Type O-Ring, Material Nitrile Rubber, Inside Diameter 2.2mm RS PRO Nitrile Rubber O-Ring O-Ring, 2.2mm Bore, 4.2mm Outer Diameter