This is a listing for a Double Lipped Grease Seal for 6 Lug and 8 Lug Trailer Hubs and Brake Drums. This grease seal has an inner diameter of 2.125".The need for this seal is determined by measuring the seal surface on your axles spindle. If you have another grease seal, you are able to measure that one as well. The Outer Diameter of this trailer grease seal measures 3.376 inches. This seal would be used with #42 Trailer Spindles in either 6 Lug or 8 Lug trailer hubs. The Inner Diameter of this grease seal would match up with the outer diameter of your trailer sppindle seal surface.
