This is a listing for a Double Lipped Grease Seal for 5 Lug Trailer Hubs and Brake Drums. This grease seal has an inner diameter of 1.72". This Grease Seal outfits all standard 5 Lug 3500lb Hubs.
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.