Rubber Plug for 1 5/8\" Opening --- 1 5/8\" Diameter Rubber Grommet Without a Hole --- Hard To Find Item --- Has 1/16\" groove around outer cirference --- Can be used to seal hole in panel or create your own hole in center for custom application --- For Panel Hole Diameter 1 5/8\" --- Outer Diameter 2\" --- Overall Thickness 7/16\" --- For Panel Thickness 1/16\" --- Durometer hardness - 55A. --- Can be used indoors or outdoors. --- Color is black. ---- Temperature range –56° to +200° F.