Unitized Seals are made from 2 independently moving portions. The inner potion fixes to the shaft and rotates independently from the hub. The outer portion fixes to the hub and rotate independent from the shaft.Unitized Seals form a strong overlapping surface to keep lubrication in, while keeping dirt and grim out.

Unitized Seals come in Metric and Inch Sizes, with a variety of different styles to fit your needs.