Lippert 333962 RV and Trailer Axle Grease Seal 5200LB - 8000LB 2.25" ID (2 pack) Lippert Components double lip grease seals form a protective barrier between the axle hub and the outside elements Double lip grease seals do a better job at keeping dirt, grime and water from infiltrating the axle grease Lippert Components double lip grease seals protect the axle hub grease from dirt and water infiltration 2 double lip grease seals per package 5,200, 6,000, 7,000 and 8,000-pound axle capacities