1、Specific Dimension: Trailer hub wheel grease seal measures 1.719in ID x 2.565in OD, please confirm the size of the old seals before purchase. 2、Fitment: Trailer hub grease seals kit is fit for most common 3500 lb. Trailer Axles 5 Lug Hubs, EZ-Lube Axles and 84 Spindles, replacement for Dexter ALKO AXIS QUALITY AXLETEK and others. 3、High Hardness: Double lip grease seal is made of chrome steel alloy and high density rubber, with better hardness and wearproof, reasonable elasticity. Ideal for long term high load use, with excellent performance. 4、Superior Sealing: Grease seal prevents leakage of liquids and gases such as lubricants and hydraulic fluids from dynamic and static matching parts, ensuring stable internal pressure while keeping out harmful dirt, dust and water. 5、Wide Applications: Ideal for trailers, RVs, boats and other heavy duty applications, the double lip oil seal ensures reliable sealing and smooth operation of trailer wheel bearings.