NILOS spacer rings are ideal when using a normal locking ring and can promote easier ring mounting. Two styles are offered, type A (for use with externally sealing AV rings) and type J (for use with internally sealing JV rings.) Optimum non-slip clamping can be achieved by matching spacer rings with Seeger® L-rings, which will compensate further for axial play. SKF® Nilos Ring, Outer Ring Sealing, Series: 619, 55 mm Inside Dia, 75 mm Outside Dia, 2.5 mm Width, 100 °C, Die-Cast Zinc