Thanks for the info!
Looks like you got the Dexter Trailer Axle Beam with E-Z Lube Spindles # 6340624 and the Dexter Trailer Idler Hub Assembly # 8-213-5UC1-EZ. This means the grease seals you need are the 10-10 which comes in a pack of 2 with part # RG06-090. view full answer...